A macrorealistic test in hybrid quantum optomechanics
arXiv:1906.01295 · doi:10.1088/1361-6455/ab6d18
Abstract
We discuss a scheme for macrorealistic theories of the Leggett-Garg form [A. J. Leggett and A. Garg, Phys. Rev. Lett. 54, 857 (1985)]. Our scheme is based on a hybrid optomechanical system. It seems reasonable to test these inequalities with an optomechanical system, since in an optomechanical cavity it is possible to create non-classical states of the mirror through a projective measurement on the cavity field. We will present the protocol to generate such non-classicality for a general optomechanical cavity and after we will carry out a theoretical test for one of the possible formulations of these inequalities using a hybrid optomechanical system. Specifically, the inequality will be investigated for an harmonic oscillator coupled to a two-level system, which replaces the light field of the cavity. The aim is to reproduce, with this system, the evolution of a single spin-1/2 for which the inequality is violated; this is achievable through the conditioning of the two-level system which will be used as an ancilla.
arXiv comment15 pages, 6 figures
References in corpus (27)
- Cavity Optomechanics
- Review article: Linear optical quantum computing
- Quantifying Coherence
- Optomechanical entanglement between a movable mirror and a cavity field
- Entanglement and decoherence of a micromechanical resonator via coupling to a Cooper box
- Leggett-Garg Inequalities
- Strong magnetic coupling between an electronic spin qubit and a mechanical resonator
- Efficient Quantum Computation using Coherent States
- A single NV defect coupled to a nanomechanical oscillator
- Experimental violation of a Bell's inequality in time with weak measurement
- Violation of the Leggett-Garg inequality with weak measurements of photons
- Pulsed quantum optomechanics
- Violation of a Leggett-Garg inequality with ideal non-invasive measurements
- Experimental Violation of Two-Party Leggett-Garg Inequalities with Semi-weak Measurements
- Ideal negative measurements in quantum walks disprove theories based on classical trajectories
- Cooling-by-measurement and mechanical state tomography via pulsed optomechanics
- Violation of a temporal Bell inequality for single spins in solid by over 50 standard deviations
- Observing and Verifying the Quantum Trajectory of a Mechanical Resonator
- Probing macroscopic realism via Ramsey correlations measurements
- A scattering quantum circuit for measuring Bell's time inequality: a nuclear magnetic resonance demonstration using maximally mixed states
- Could light harvesting complexes exhibit non-classical effects at room temperature?
- Schroedinger Cat States of a Nanomechanical Resonator
- Sequential modular position and momentum measurements of a trapped ion mechanical oscillator
- Atomic "bomb testing": the Elitzur-Vaidman experiment violates the Leggett-Garg inequality
- Unconditional preparation of nonclassical states via linear-and-quadratic optomechanics
- Non-classicality of optomechanical devices in experimentally realistic operating regimes
- Divisible quantum dynamics satisfies temporal Tsirelson's bound