Macroscopic non-classical state preparation via post-selection

Abstract

Macroscopic mechanical qubits are fundamental both to test the classical-quantum boundary and present suitable candidates for quantum information processing. Motivated by these, we propose a feasible probabilistic scheme to generate an on-demand mechanical qubit, as well as Schrödinger's cat and Fock number states. In order to accomplish this proposal, we study an open dispersive spin-mechanical system in the absence of any external driving. The procedure is solely based on spin post-selection in the weak coupling regime. Through this scheme we demonstrate that the achieved superposition is closely related to the amplification of the mean values of the mechanical quadratures as they are associated to the maximum quantum coherence.

7 pages (+ 2 pages in Appendix), 7 figures

References in corpus (19)

• QuTiP 2: A Python framework for the dynamics of open quantum systems
• Sideband Cooling Micromechanical Motion to the Quantum Ground State
• Optomechanical entanglement between a movable mirror and a cavity field
• Nonlinear atom interferometer surpasses classical precision limit
• Measuring Quantum Coherence with Entanglement
• High-fidelity projective readout of a solid-state spin quantum register
• Large Quantum Superpositions and Interference of Massive Nanometer-Sized Objects
• Non-classical correlations between single photons and phonons from a mechanical oscillator
• Opto-mechanical transducers for long-distance quantum communication
• Quantum acoustics with superconducting qubits
• State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
• Strong coupling between single-electron tunneling and nano-mechanical motion
• Hanbury Brown and Twiss interferometry of single phonons from an optomechanical resonator
• Bose-Einstein condensate coupled to a nanomechanical resonator on an atom chip
• Robust concurrent remote entanglement between two superconducting qubits
• Ground state cooling of a nanomechanical resonator via a Cooper pair box qubit
• Heralded Control of Mechanical motion by Single Spins
• Non-classical state generation in macroscopic systems via hybrid discrete-continuous quantum measurements
• Engineering single-phonon number states of a mechanical oscillator via photon subtraction

Cited by in corpus (10)

• Physics-informed neural networks for quantum control
• Ground-state cooling of a nanomechanical oscillator with N spins
• Weak value amplification of photon number operators in the optomechanical interaction
• Steady-state squeezing transfer in hybrid optomechanics
• Generation of entanglement via squeezing on a tripartite-optomechanical system
• Phonon maser stimulated by spin post-selection
• Heisenberg-Limited Spin-Mechanical Gravimetry
• Simultaneous photon and phonon lasing in a two-tone driven optomechanical system
• Generation of phonon quantum states and quantum correlations among single photon emitters in hexagonal boron nitride
• Phonon trapping states as a witness for generation of phonon blockade in a hybrid micromaser system