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Quantum non-demolition phonon counter with a hybrid optomechnical system |
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| Authors: | Qiao Song KeYe Zhang Ying Dong WeiPing Zhang |
| Institution: | 1.Quantum Institute for Light and Atoms, School of Physics and Material Science,East China Normal University,Shanghai,China;2.Institute for Quantum Computing and Department of Physics and Astronomy,University of Waterloo,Waterloo,Canada;3.Department of Physics and Astronomy,Shanghai Jiao Tong University, and Tsung-Dao Lee Institute,Shanghai,China;4.Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan,China |
| Abstract: | A phonon counting scheme based on the control of polaritons in an optomechanical system is proposed. This approach permits us to measure the number of phonons in a quantum non-demolition (QND) manner for arbitrary modes not limited by the frequency matching condition as in usual photon-phonon scattering detections. The performance on phonon number transfer and quantum state transfer of the counter are analyzed and simulated numerically by taking into account all relevant sources of noise. |
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