Entanglement of macroscopic test masses and the Standard Quantum Limit in laser interferometry

Details Entanglement of macroscopic test masses and the Standard Quantum Limit in laser interferometry Entanglement of macroscopic test masses and the Standard Quantum Limit in laser interferometry

2007-02-27

arxiv.org/abs/quant-ph/0702258v4

Phys. Rev. Lett. 100, 013601 (2008)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.100.013601

We show that the generation of entanglement of two heavily macroscopic mirrors with masses of up to several kilograms are feasible with state of the art techniques of high-precision laser interferometry. The basis of such a demonstration would be a Michelson interferometer with suspended mirrors and simultaneous homodyne detections at both interferometer output ports. We present the connection between the generation of entanglement and the Standard Quantum Limit (SQL) for a free mass. The SQL is a well-known reference limit in operating interferometers for gravitational-wave detection and provides a measure of when macroscopic entanglement can be observed in the presence of realistic decoherence processes.

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