M. Pysher, Y. Miwa, R. Shahrokhshahi, R. Bloomer, and O. Pfister, “Parallel generation of quadripartite cluster entanglement in the optical frequency comb,” Phys. Rev. Lett. 107, 030505 (2011).

[CrossRef]

W. X. Shi, X. M. Hu, J. Y. Li, and F. Wang, “Entanglement of three-mode light via six-wave mixing in a four-level Y-type atomic system,” J. Phys. B 43, 155506 (2010).

[CrossRef]

X. M. Hu, H. Sun, and F. Wang, “Scalable network of quadrangle entanglements via multiple phase-dependent electromagnetically induced transparency,” Phys. Rev. A 82, 045807 (2010).

[CrossRef]

H. Y. Leng, J. F. Wang, Y. B. Yu, X. Q. Yu, P. Xu, Z. D. Xie, J. S. Zhao, and S. N. Zhu, “Scheme to generate continuous-variable quadripartite entanglement by intracavity down-conversion cascaded with double sum-frequency generations,” Phys. Rev. A 79, 032337 (2009).

[CrossRef]

X. Y. Zhao, Y. H. Ma, and L. Zhou, “Generation of multi-mode-entangled light,” Opt. Commun. 282, 1593–1597 (2009).

[CrossRef]

X. X. Li and X. M. Hu, “Tripartite entanglement in quantum-beat lasers,” Phys. Rev. A 80, 023815 (2009).

[CrossRef]

X. Y. Lü, P. Huang, W. X. Yang, and X. X. Yang, “Entanglement via atomic coherence induced by two strong classical fields,” Phys. Rev. A 80, 032305 (2009).

[CrossRef]

X. Y. Lü, J. B. Liu, L. G. Si, and X. X. Yang, “Continuous-variable entanglement in a two-mode four-level single-atom laser,” J. Phys. B 41, 035501 (2008).

[CrossRef]

X. Y. Lü, J. B. Liu, Yü Tian, P. J. Song, and Z. M. Zhan, “Single molecular magnets as a source of continuous-variable entanglement,” Europhys. Lett. 82, 64003 (2008).

[CrossRef]

X. M. Hu, and J. H. Zou, “Quantum-beat lasers as bright sources of entangled sub-Poissonian light,” Phys. Rev. A 78, 045801 (2008).

[CrossRef]

S. Q. Zhai, R. G. Yang, D. H. Fan, J. Guo, K. Liu, J. X. Zhang, and J. R. Gao, “Tripartite entanglement from the cavity with second-order harmonic generation,” Phys. Rev. A 78, 014302 (2008).

[CrossRef]

S. Qamar, F. Ghafoor, M. Hillery, and M. S. Zubairy, “Quantum beat laser as a source of entangled radiation,” Phys. Rev. A 77, 062308 (2008).

[CrossRef]

G. L. Cheng, X. M. Hu, W. X. Zhong, and Q. Li, “Two-channel interaction of squeeze-transformed modes with dressed atoms: entanglement enhancement in four-wave mixing in three-level systems,” Phys. Rev. A 78, 033811 (2008).

[CrossRef]

S. Bertaina, S. Gambarelli, T. Mitra, B. Tsukerblat, A. Mller, and B. Barbara, “Quantum oscillations in a molecular magnet,” Nature 453, 203–206 (2008).

[CrossRef]

J. Zhang, C. D. Xie, and K. C. Peng, “Continuous-variable telecloning with phase-conjugate inputs,” Phys. Rev. A 77, 022316 (2008).

[CrossRef]

G. Keller, V. D’Auria, N. Treps, T. Coudreau, J. Laurat, and C. Fabre, “Experimental demonstration of frequency-degenerate bright EPR beams with a self-phase-locked OPO,” Opt. Express 16, 9351–9356 (2008).

[CrossRef]

C. Pennarun, A. S. Bradley, and M. K. Olsen, “Tripartite entanglement and threshold properties of coupled intracavity down-conversion and sum-frequency generation,” Phys. Rev. A 76, 063812 (2007).

[CrossRef]

X. L. Su, A. H. Tan, X. J. Jia, J. Zhang, C. D. Xie, and K. C. Peng, “Experimental preparation of quadripartite cluster and Greenberger–Horne–Zeilinger entangled states for continuous variables,” Phys. Rev. Lett. 98, 070502 (2007).

[CrossRef]

X. T. Xie, W. Li, J. Li, W. X. Yang, A. Yuan, and X. X. Yang, “Transverse acoustic wave in molecular magnets via electromagnetically induced transparency,” Phys. Rev. B 75, 184423 (2007).

[CrossRef]

Y. Wu and X. X. Yang, “Four-wave mixing in molecular magnets via electromagnetically induced transparency,” Phys. Rev. B 76, 054425 (2007).

[CrossRef]

Y. Wu and X. X. Yang, “Giant Kerr nonlinearities and solitons in a crystal of molecular magnets,” Appl. Phys. Lett. 91, 094104 (2007).

[CrossRef]

M. Kiffner, M. S. Zubairy, J. Evers, and C. H. Keitel, “Two-mode single-atom laser as a source of entangled light,” Phys. Rev. A 75, 033816 (2007).

[CrossRef]

A. Ardavan, O. Rival, J. J. L. Morton, S. J. Blundell, A. M. Tyryshkin, G. A. Timco, and R. E. P. Winpenny, “Will spin-relaxation times in molecular magnets permit quantum information processing,” Phys. Rev. Lett. 98, 057201 (2007).

[CrossRef]

H. T. Tan and G. X. Li, “Macroscopic three-mode squeezed and fully inseparable entangled beams from triply coupled intracavity Kerr nonlinearities,” Phys. Rev. A 75, 063815 (2007).

[CrossRef]

S. Pielawa, G. Morigi, D. Vitali, and L. Davidovich, “Generation of Einstein–Podolsky–Rosen-entangled radiation through an atomic reservoir,” Phys. Rev. Lett. 98, 240401 (2007).

[CrossRef]

S. W. Du, E. Oh, J. M. Wen, and M. H. Rubin, “Four-wave mixing in three-level systems: interference and entanglement,” Phys. Rev. A 76, 013803 (2007).

[CrossRef]

G. X. Li, H. T. Tan, and M. Macovei, “Enhancement of entanglement for two-mode fields generated from four-wave mixing with the help of the auxiliary atomic transition,” Phys. Rev. A 76, 053827 (2007).

[CrossRef]

L. Zhou, H. Xiong, and M. S. Zubairy, “Single atom as a macroscopic entanglement source,” Phys. Rev. A 74, 022321(2006).

[CrossRef]

M. K. Olsen and A. S. Bradley, “Asymmetric polychromatic tripartite entanglement from interlinked χ(2) parametric interactions,” Phys. Rev. A 74, 063809 (2006).

[CrossRef]

A. V. Shvetsov, G. A. Vugalter, and A. I. Grebeneva, “Theoretical investigation of electromagnetically induced transparency in a crystal of molecular magnets,” Phys. Rev. B 74, 054416 (2006).

[CrossRef]

S. L. Braunstein and P. van Loock, “Quantum information with continuous variables,” Rev. Mod. Phys. 77, 513–577 (2005).

[CrossRef]

H. Xiong, M. O. Scully, and M. S. Zubairy, “Correlated spontaneous emission laser as an entanglement amplifier,” Phys. Rev. Lett. 94, 023601 (2005).

[CrossRef]

H. T. Tan, S. Y. Zhu, and M. S. Zubairy, “Continuous-variable entanglement in a correlated spontaneous emission laser,” Phys. Rev. A 72, 022305 (2005).

[CrossRef]

I. D. Tokman, G. A. Vugalter, and A. I. Grebeneva, “Parametric interaction of two acoustic waves in a crystal of molecular magnets in the presence of a strong ac magnetic field,” Phys. Rev. B 71, 094431 (2005).

[CrossRef]

Y. Wu and X. X. Yang, “Highly efficient four-wave mixing in double-Λ system in ultraslow propagation regime,” Phys. Rev. A 70, 053818 (2004).

[CrossRef]

Y. Wu, M. G. Payne, E. W. Hagley, and L. Deng, “Preparation of multiparty entangled states using pairwise perfectly efficient single-probe photon four-wave mixing,” Phys. Rev. A 69, 063803 (2004).

[CrossRef]

E. M. Chudnovsky and D. A. Garanin, “Phonon superradiance and phonon laser effect in nanomagnets,” Phys. Rev. Lett. 93, 257205 (2004).

[CrossRef]

J. T. Jing, J. Zhang, Y. Yan, F. G. Zhao, C. D. Xie, and K. C. Peng, “Experimental demonstration of tripartite entanglement and controlled dense coding for continuous variables,” Phys. Rev. Lett. 90, 167903 (2003).

[CrossRef]

T. Aoki, N. Takei, H. Yonezawa, K. Wakui, T. Hiraoka, A. Furusawa, and P. van Loock, “Experimental creation of a fully inseparable tripartite continuous-variable state,” Phys. Rev. Lett. 91, 080404 (2003).

[CrossRef]

P. van Loock and A. Furusawa, “Detecting genuine multipartite continuous-variable entanglement,” Phys. Rev. A 67, 052315 (2003).

[CrossRef]

Y. Wu, L. L. Wen, and Y. F. Zhu, “Efficient hyper-Raman scattering in resonant coherent medium,” Opt. Lett. 28, 631–633(2003).

[CrossRef]

E. M. Chudnovsky, and D. A. Garanin, “Spin tunneling via dislocations in Mn12 acetate crystals,” Phys. Rev. Lett. 87, 187203 (2001).

[CrossRef]

M. N. Leuenberger and D. Loss, “Quantum computing in molecular magnets,” Nature 410, 789–793 (2001).

[CrossRef]

P. van Loock, P. van Loock, and S. L. Braunstein, “Multipartite entanglement for continuous variables: a quantum teleportation network,” Phys. Rev. Lett. 84, 3482–3485 (2000).

[CrossRef]

A. Furusawa, J. L. Sorensen, S. L. Braunstein, C. A. Fuchs, H. J. Kimble, and E. S. Polzik, “Unconditional quantum teleportation,” Science 282, 706–709 (1998).

[CrossRef]

T. Aoki, N. Takei, H. Yonezawa, K. Wakui, T. Hiraoka, A. Furusawa, and P. van Loock, “Experimental creation of a fully inseparable tripartite continuous-variable state,” Phys. Rev. Lett. 91, 080404 (2003).

[CrossRef]

A. Ardavan, O. Rival, J. J. L. Morton, S. J. Blundell, A. M. Tyryshkin, G. A. Timco, and R. E. P. Winpenny, “Will spin-relaxation times in molecular magnets permit quantum information processing,” Phys. Rev. Lett. 98, 057201 (2007).

[CrossRef]

S. Bertaina, S. Gambarelli, T. Mitra, B. Tsukerblat, A. Mller, and B. Barbara, “Quantum oscillations in a molecular magnet,” Nature 453, 203–206 (2008).

[CrossRef]

S. Bertaina, S. Gambarelli, T. Mitra, B. Tsukerblat, A. Mller, and B. Barbara, “Quantum oscillations in a molecular magnet,” Nature 453, 203–206 (2008).

[CrossRef]

M. Pysher, Y. Miwa, R. Shahrokhshahi, R. Bloomer, and O. Pfister, “Parallel generation of quadripartite cluster entanglement in the optical frequency comb,” Phys. Rev. Lett. 107, 030505 (2011).

[CrossRef]

A. Ardavan, O. Rival, J. J. L. Morton, S. J. Blundell, A. M. Tyryshkin, G. A. Timco, and R. E. P. Winpenny, “Will spin-relaxation times in molecular magnets permit quantum information processing,” Phys. Rev. Lett. 98, 057201 (2007).

[CrossRef]

C. Pennarun, A. S. Bradley, and M. K. Olsen, “Tripartite entanglement and threshold properties of coupled intracavity down-conversion and sum-frequency generation,” Phys. Rev. A 76, 063812 (2007).

[CrossRef]

M. K. Olsen and A. S. Bradley, “Asymmetric polychromatic tripartite entanglement from interlinked χ(2) parametric interactions,” Phys. Rev. A 74, 063809 (2006).

[CrossRef]

S. L. Braunstein and P. van Loock, “Quantum information with continuous variables,” Rev. Mod. Phys. 77, 513–577 (2005).

[CrossRef]

P. van Loock, P. van Loock, and S. L. Braunstein, “Multipartite entanglement for continuous variables: a quantum teleportation network,” Phys. Rev. Lett. 84, 3482–3485 (2000).

[CrossRef]

A. Furusawa, J. L. Sorensen, S. L. Braunstein, C. A. Fuchs, H. J. Kimble, and E. S. Polzik, “Unconditional quantum teleportation,” Science 282, 706–709 (1998).

[CrossRef]

G. L. Cheng, X. M. Hu, W. X. Zhong, and Q. Li, “Two-channel interaction of squeeze-transformed modes with dressed atoms: entanglement enhancement in four-wave mixing in three-level systems,” Phys. Rev. A 78, 033811 (2008).

[CrossRef]

M. Nielsen and I. Chuang, Quantum Computation and Quantum Information (Cambridge University, 2000).

E. M. Chudnovsky and D. A. Garanin, “Phonon superradiance and phonon laser effect in nanomagnets,” Phys. Rev. Lett. 93, 257205 (2004).

[CrossRef]

E. M. Chudnovsky, and D. A. Garanin, “Spin tunneling via dislocations in Mn12 acetate crystals,” Phys. Rev. Lett. 87, 187203 (2001).

[CrossRef]

C. Cohen-Tannoudji, J. Dupont-Roc, and G. Grynberg, Atom-Photon Interactions (Wiley-Interscience, 1992).

S. Pielawa, G. Morigi, D. Vitali, and L. Davidovich, “Generation of Einstein–Podolsky–Rosen-entangled radiation through an atomic reservoir,” Phys. Rev. Lett. 98, 240401 (2007).

[CrossRef]

Y. Wu, M. G. Payne, E. W. Hagley, and L. Deng, “Preparation of multiparty entangled states using pairwise perfectly efficient single-probe photon four-wave mixing,” Phys. Rev. A 69, 063803 (2004).

[CrossRef]

S. W. Du, E. Oh, J. M. Wen, and M. H. Rubin, “Four-wave mixing in three-level systems: interference and entanglement,” Phys. Rev. A 76, 013803 (2007).

[CrossRef]

C. Cohen-Tannoudji, J. Dupont-Roc, and G. Grynberg, Atom-Photon Interactions (Wiley-Interscience, 1992).

M. Kiffner, M. S. Zubairy, J. Evers, and C. H. Keitel, “Two-mode single-atom laser as a source of entangled light,” Phys. Rev. A 75, 033816 (2007).

[CrossRef]

S. Q. Zhai, R. G. Yang, D. H. Fan, J. Guo, K. Liu, J. X. Zhang, and J. R. Gao, “Tripartite entanglement from the cavity with second-order harmonic generation,” Phys. Rev. A 78, 014302 (2008).

[CrossRef]

A. Furusawa, J. L. Sorensen, S. L. Braunstein, C. A. Fuchs, H. J. Kimble, and E. S. Polzik, “Unconditional quantum teleportation,” Science 282, 706–709 (1998).

[CrossRef]

T. Aoki, N. Takei, H. Yonezawa, K. Wakui, T. Hiraoka, A. Furusawa, and P. van Loock, “Experimental creation of a fully inseparable tripartite continuous-variable state,” Phys. Rev. Lett. 91, 080404 (2003).

[CrossRef]

P. van Loock and A. Furusawa, “Detecting genuine multipartite continuous-variable entanglement,” Phys. Rev. A 67, 052315 (2003).

[CrossRef]

A. Furusawa, J. L. Sorensen, S. L. Braunstein, C. A. Fuchs, H. J. Kimble, and E. S. Polzik, “Unconditional quantum teleportation,” Science 282, 706–709 (1998).

[CrossRef]

S. Bertaina, S. Gambarelli, T. Mitra, B. Tsukerblat, A. Mller, and B. Barbara, “Quantum oscillations in a molecular magnet,” Nature 453, 203–206 (2008).

[CrossRef]

S. Q. Zhai, R. G. Yang, D. H. Fan, J. Guo, K. Liu, J. X. Zhang, and J. R. Gao, “Tripartite entanglement from the cavity with second-order harmonic generation,” Phys. Rev. A 78, 014302 (2008).

[CrossRef]

E. M. Chudnovsky and D. A. Garanin, “Phonon superradiance and phonon laser effect in nanomagnets,” Phys. Rev. Lett. 93, 257205 (2004).

[CrossRef]

E. M. Chudnovsky, and D. A. Garanin, “Spin tunneling via dislocations in Mn12 acetate crystals,” Phys. Rev. Lett. 87, 187203 (2001).

[CrossRef]

S. Qamar, F. Ghafoor, M. Hillery, and M. S. Zubairy, “Quantum beat laser as a source of entangled radiation,” Phys. Rev. A 77, 062308 (2008).

[CrossRef]

A. V. Shvetsov, G. A. Vugalter, and A. I. Grebeneva, “Theoretical investigation of electromagnetically induced transparency in a crystal of molecular magnets,” Phys. Rev. B 74, 054416 (2006).

[CrossRef]

I. D. Tokman, G. A. Vugalter, and A. I. Grebeneva, “Parametric interaction of two acoustic waves in a crystal of molecular magnets in the presence of a strong ac magnetic field,” Phys. Rev. B 71, 094431 (2005).

[CrossRef]

C. Cohen-Tannoudji, J. Dupont-Roc, and G. Grynberg, Atom-Photon Interactions (Wiley-Interscience, 1992).

S. Q. Zhai, R. G. Yang, D. H. Fan, J. Guo, K. Liu, J. X. Zhang, and J. R. Gao, “Tripartite entanglement from the cavity with second-order harmonic generation,” Phys. Rev. A 78, 014302 (2008).

[CrossRef]

Y. Wu, M. G. Payne, E. W. Hagley, and L. Deng, “Preparation of multiparty entangled states using pairwise perfectly efficient single-probe photon four-wave mixing,” Phys. Rev. A 69, 063803 (2004).

[CrossRef]

S. Qamar, F. Ghafoor, M. Hillery, and M. S. Zubairy, “Quantum beat laser as a source of entangled radiation,” Phys. Rev. A 77, 062308 (2008).

[CrossRef]

T. Aoki, N. Takei, H. Yonezawa, K. Wakui, T. Hiraoka, A. Furusawa, and P. van Loock, “Experimental creation of a fully inseparable tripartite continuous-variable state,” Phys. Rev. Lett. 91, 080404 (2003).

[CrossRef]

W. X. Shi, X. M. Hu, J. Y. Li, and F. Wang, “Entanglement of three-mode light via six-wave mixing in a four-level Y-type atomic system,” J. Phys. B 43, 155506 (2010).

[CrossRef]

X. M. Hu, H. Sun, and F. Wang, “Scalable network of quadrangle entanglements via multiple phase-dependent electromagnetically induced transparency,” Phys. Rev. A 82, 045807 (2010).

[CrossRef]

X. X. Li and X. M. Hu, “Tripartite entanglement in quantum-beat lasers,” Phys. Rev. A 80, 023815 (2009).

[CrossRef]

X. M. Hu, and J. H. Zou, “Quantum-beat lasers as bright sources of entangled sub-Poissonian light,” Phys. Rev. A 78, 045801 (2008).

[CrossRef]

G. L. Cheng, X. M. Hu, W. X. Zhong, and Q. Li, “Two-channel interaction of squeeze-transformed modes with dressed atoms: entanglement enhancement in four-wave mixing in three-level systems,” Phys. Rev. A 78, 033811 (2008).

[CrossRef]

X. Y. Lü, P. Huang, W. X. Yang, and X. X. Yang, “Entanglement via atomic coherence induced by two strong classical fields,” Phys. Rev. A 80, 032305 (2009).

[CrossRef]

X. L. Su, A. H. Tan, X. J. Jia, J. Zhang, C. D. Xie, and K. C. Peng, “Experimental preparation of quadripartite cluster and Greenberger–Horne–Zeilinger entangled states for continuous variables,” Phys. Rev. Lett. 98, 070502 (2007).

[CrossRef]

J. T. Jing, J. Zhang, Y. Yan, F. G. Zhao, C. D. Xie, and K. C. Peng, “Experimental demonstration of tripartite entanglement and controlled dense coding for continuous variables,” Phys. Rev. Lett. 90, 167903 (2003).

[CrossRef]

M. Kiffner, M. S. Zubairy, J. Evers, and C. H. Keitel, “Two-mode single-atom laser as a source of entangled light,” Phys. Rev. A 75, 033816 (2007).

[CrossRef]

M. Kiffner, M. S. Zubairy, J. Evers, and C. H. Keitel, “Two-mode single-atom laser as a source of entangled light,” Phys. Rev. A 75, 033816 (2007).

[CrossRef]

A. Furusawa, J. L. Sorensen, S. L. Braunstein, C. A. Fuchs, H. J. Kimble, and E. S. Polzik, “Unconditional quantum teleportation,” Science 282, 706–709 (1998).

[CrossRef]

H. Y. Leng, J. F. Wang, Y. B. Yu, X. Q. Yu, P. Xu, Z. D. Xie, J. S. Zhao, and S. N. Zhu, “Scheme to generate continuous-variable quadripartite entanglement by intracavity down-conversion cascaded with double sum-frequency generations,” Phys. Rev. A 79, 032337 (2009).

[CrossRef]

M. N. Leuenberger and D. Loss, “Quantum computing in molecular magnets,” Nature 410, 789–793 (2001).

[CrossRef]

H. T. Tan and G. X. Li, “Macroscopic three-mode squeezed and fully inseparable entangled beams from triply coupled intracavity Kerr nonlinearities,” Phys. Rev. A 75, 063815 (2007).

[CrossRef]

G. X. Li, H. T. Tan, and M. Macovei, “Enhancement of entanglement for two-mode fields generated from four-wave mixing with the help of the auxiliary atomic transition,” Phys. Rev. A 76, 053827 (2007).

[CrossRef]

X. T. Xie, W. Li, J. Li, W. X. Yang, A. Yuan, and X. X. Yang, “Transverse acoustic wave in molecular magnets via electromagnetically induced transparency,” Phys. Rev. B 75, 184423 (2007).

[CrossRef]

W. X. Shi, X. M. Hu, J. Y. Li, and F. Wang, “Entanglement of three-mode light via six-wave mixing in a four-level Y-type atomic system,” J. Phys. B 43, 155506 (2010).

[CrossRef]

G. L. Cheng, X. M. Hu, W. X. Zhong, and Q. Li, “Two-channel interaction of squeeze-transformed modes with dressed atoms: entanglement enhancement in four-wave mixing in three-level systems,” Phys. Rev. A 78, 033811 (2008).

[CrossRef]

X. T. Xie, W. Li, J. Li, W. X. Yang, A. Yuan, and X. X. Yang, “Transverse acoustic wave in molecular magnets via electromagnetically induced transparency,” Phys. Rev. B 75, 184423 (2007).

[CrossRef]

X. X. Li and X. M. Hu, “Tripartite entanglement in quantum-beat lasers,” Phys. Rev. A 80, 023815 (2009).

[CrossRef]

X. Y. Lü, J. B. Liu, L. G. Si, and X. X. Yang, “Continuous-variable entanglement in a two-mode four-level single-atom laser,” J. Phys. B 41, 035501 (2008).

[CrossRef]

X. Y. Lü, J. B. Liu, Yü Tian, P. J. Song, and Z. M. Zhan, “Single molecular magnets as a source of continuous-variable entanglement,” Europhys. Lett. 82, 64003 (2008).

[CrossRef]

S. Q. Zhai, R. G. Yang, D. H. Fan, J. Guo, K. Liu, J. X. Zhang, and J. R. Gao, “Tripartite entanglement from the cavity with second-order harmonic generation,” Phys. Rev. A 78, 014302 (2008).

[CrossRef]

M. N. Leuenberger and D. Loss, “Quantum computing in molecular magnets,” Nature 410, 789–793 (2001).

[CrossRef]

X. Y. Lü, P. Huang, W. X. Yang, and X. X. Yang, “Entanglement via atomic coherence induced by two strong classical fields,” Phys. Rev. A 80, 032305 (2009).

[CrossRef]

X. Y. Lü, J. B. Liu, Yü Tian, P. J. Song, and Z. M. Zhan, “Single molecular magnets as a source of continuous-variable entanglement,” Europhys. Lett. 82, 64003 (2008).

[CrossRef]

X. Y. Lü, J. B. Liu, L. G. Si, and X. X. Yang, “Continuous-variable entanglement in a two-mode four-level single-atom laser,” J. Phys. B 41, 035501 (2008).

[CrossRef]

X. Y. Zhao, Y. H. Ma, and L. Zhou, “Generation of multi-mode-entangled light,” Opt. Commun. 282, 1593–1597 (2009).

[CrossRef]

G. X. Li, H. T. Tan, and M. Macovei, “Enhancement of entanglement for two-mode fields generated from four-wave mixing with the help of the auxiliary atomic transition,” Phys. Rev. A 76, 053827 (2007).

[CrossRef]

S. Bertaina, S. Gambarelli, T. Mitra, B. Tsukerblat, A. Mller, and B. Barbara, “Quantum oscillations in a molecular magnet,” Nature 453, 203–206 (2008).

[CrossRef]

M. Pysher, Y. Miwa, R. Shahrokhshahi, R. Bloomer, and O. Pfister, “Parallel generation of quadripartite cluster entanglement in the optical frequency comb,” Phys. Rev. Lett. 107, 030505 (2011).

[CrossRef]

S. Bertaina, S. Gambarelli, T. Mitra, B. Tsukerblat, A. Mller, and B. Barbara, “Quantum oscillations in a molecular magnet,” Nature 453, 203–206 (2008).

[CrossRef]

S. Pielawa, G. Morigi, D. Vitali, and L. Davidovich, “Generation of Einstein–Podolsky–Rosen-entangled radiation through an atomic reservoir,” Phys. Rev. Lett. 98, 240401 (2007).

[CrossRef]

A. Ardavan, O. Rival, J. J. L. Morton, S. J. Blundell, A. M. Tyryshkin, G. A. Timco, and R. E. P. Winpenny, “Will spin-relaxation times in molecular magnets permit quantum information processing,” Phys. Rev. Lett. 98, 057201 (2007).

[CrossRef]

M. Nielsen and I. Chuang, Quantum Computation and Quantum Information (Cambridge University, 2000).

S. W. Du, E. Oh, J. M. Wen, and M. H. Rubin, “Four-wave mixing in three-level systems: interference and entanglement,” Phys. Rev. A 76, 013803 (2007).

[CrossRef]

C. Pennarun, A. S. Bradley, and M. K. Olsen, “Tripartite entanglement and threshold properties of coupled intracavity down-conversion and sum-frequency generation,” Phys. Rev. A 76, 063812 (2007).

[CrossRef]

M. K. Olsen and A. S. Bradley, “Asymmetric polychromatic tripartite entanglement from interlinked χ(2) parametric interactions,” Phys. Rev. A 74, 063809 (2006).

[CrossRef]

Y. Wu, M. G. Payne, E. W. Hagley, and L. Deng, “Preparation of multiparty entangled states using pairwise perfectly efficient single-probe photon four-wave mixing,” Phys. Rev. A 69, 063803 (2004).

[CrossRef]

J. Zhang, C. D. Xie, and K. C. Peng, “Continuous-variable telecloning with phase-conjugate inputs,” Phys. Rev. A 77, 022316 (2008).

[CrossRef]

X. L. Su, A. H. Tan, X. J. Jia, J. Zhang, C. D. Xie, and K. C. Peng, “Experimental preparation of quadripartite cluster and Greenberger–Horne–Zeilinger entangled states for continuous variables,” Phys. Rev. Lett. 98, 070502 (2007).

[CrossRef]

J. T. Jing, J. Zhang, Y. Yan, F. G. Zhao, C. D. Xie, and K. C. Peng, “Experimental demonstration of tripartite entanglement and controlled dense coding for continuous variables,” Phys. Rev. Lett. 90, 167903 (2003).

[CrossRef]

C. Pennarun, A. S. Bradley, and M. K. Olsen, “Tripartite entanglement and threshold properties of coupled intracavity down-conversion and sum-frequency generation,” Phys. Rev. A 76, 063812 (2007).

[CrossRef]

M. Pysher, Y. Miwa, R. Shahrokhshahi, R. Bloomer, and O. Pfister, “Parallel generation of quadripartite cluster entanglement in the optical frequency comb,” Phys. Rev. Lett. 107, 030505 (2011).

[CrossRef]

S. Pielawa, G. Morigi, D. Vitali, and L. Davidovich, “Generation of Einstein–Podolsky–Rosen-entangled radiation through an atomic reservoir,” Phys. Rev. Lett. 98, 240401 (2007).

[CrossRef]

A. Furusawa, J. L. Sorensen, S. L. Braunstein, C. A. Fuchs, H. J. Kimble, and E. S. Polzik, “Unconditional quantum teleportation,” Science 282, 706–709 (1998).

[CrossRef]

M. Pysher, Y. Miwa, R. Shahrokhshahi, R. Bloomer, and O. Pfister, “Parallel generation of quadripartite cluster entanglement in the optical frequency comb,” Phys. Rev. Lett. 107, 030505 (2011).

[CrossRef]

S. Qamar, F. Ghafoor, M. Hillery, and M. S. Zubairy, “Quantum beat laser as a source of entangled radiation,” Phys. Rev. A 77, 062308 (2008).

[CrossRef]

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