Deterministic nonclassicality for quantum mechanical oscillators in thermal states
arXiv:1702.08269 · doi:10.1103/PhysRevA.94.013850
Abstract
Quantum nonclassicality is the basic building stone for the vast majority of quantum information applications and methods of its generation are at the forefront of research. One of the obstacles any method needs to clear is the looming presence of decohorence and noise which act against the nonclassicality and often erase it completely. In this paper we show that nonclassical states of a quantum harmonic oscillators initially in thermal equilibrium states can be deterministically created by coupling it to a single two level system. This can be achieved even in the absorption regime in which the two level system is initially in the ground state. The method is resilient to noise and it may actually benefit from it, as witnessed by the systems with higher thermal energy producing more nonclassical states.
9 pages, 8 figures
References in corpus (17)
- Reconstruction of non-classical cavity field states with snapshots of their decoherence
- State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
- Dynamic strain-mediated coupling of a single diamond spin to a mechanical resonator
- A computable measure of nonclassicality for light
- Phonon-induced spin-spin interactions in diamond nanostructures: application to spin squeezing
- Quantum harmonic oscillator state synthesis by reservoir engineering
- Experimental nonclassicality of single-photon-added thermal light states
- Gaussian measures of entanglement versus negativities: the ordering of two-mode Gaussian states
- Quantum homodyne tomography of a two-photon Fock state
- Generating superposition of up-to three photons for continuous variable quantum information processing
- High purity bright single photon source
- Field locked to Fock state by quantum feedback with single photon corrections
- Quantum dot opto-mechanics in a fully self-assembled nanowire
- Spin-motion entanglement and state diagnosis with squeezed oscillator wavepackets
- Entanglement of Gaussian states using beam splitter
- Fast thermometry for trapped ions using dark resonances
- Microwave control of trapped-ion motion assisted by a running optical lattice