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 (43)
- A computable measure of entanglement
- Gaussian Quantum Information
- The logarithmic negativity: A full entanglement monotone that is not convex
- Cavity-based quantum networks with single atoms and optical photons
- Quantum squeezing of motion in a mechanical resonator
- Conversion of conventional gravitational-wave interferometers into QND interferometers by modifying their input and/or output optics
- Quantum state reconstruction of the single-photon Fock state
- Reconstruction of non-classical cavity field states with snapshots of their decoherence
- Entanglement by a beam splitter: nonclassicality as a prerequisite for entanglement
- Positive Wigner functions render classical simulation of quantum computation efficient
- 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 single NV defect coupled to a nanomechanical oscillator
- A computable measure of nonclassicality for light
- Phonon-induced spin-spin interactions in diamond nanostructures: application to spin squeezing
- Strain-mediated coupling in a quantum dot-mechanical oscillator hybrid system
- Quantum harmonic oscillator state synthesis by reservoir engineering
- Experimental nonclassicality of single-photon-added thermal light states
- Mechanical spin control of nitrogen-vacancy centers in diamond
- Gaussian measures of entanglement versus negativities: the ordering of two-mode Gaussian states
- Quantum homodyne tomography of a two-photon Fock state
- Strong mechanical driving of a single electron spin
- The entangling power of passive optical elements
- A theorem for the beam splitter entangler
- Unified quantification of nonclassicality and entanglement
- Generating superposition of up-to three photons for continuous variable quantum information processing
- High purity bright single photon source
- Heralded single phonon preparation, storage and readout in cavity optomechanics
- Field locked to Fock state by quantum feedback with single photon corrections
- Quantum dot opto-mechanics in a fully self-assembled nanowire
- Preparing a mechanical oscillator in non-Gaussian quantum states
- Spin-motion entanglement and state diagnosis with squeezed oscillator wavepackets
- Quantum lithography, entanglement and Heisenberg-limited parameter estimation
- Entanglement-enhanced detection of single-photon scattering events
- Macroscopic optomechanics from displaced single-photon entanglement
- Entangled Mechanical Cat States via Conditional Single Photon Optomechanics
- Entanglement of Gaussian states using beam splitter
- Increasing relative nonclassicality quantified by standard entanglement potentials by dissipation and unbalanced beam splitting
- A Quantum Optomechanical Interface Beyond the Resolved Sideband Limit
- Fast thermometry for trapped ions using dark resonances
- Noise resilient quantum interface based on QND interaction
- Interferometric thermometry of a single sub-Doppler cooled atom
- Microwave control of trapped-ion motion assisted by a running optical lattice
Cited by in corpus (9)
- Quantum non-Gaussianity of light and atoms
- Nonclassicality detection from few Fock-state probabilities
- Deterministic nonlinear phase gates induced by a single qubit
- Deterministic nonlinear gates with oscillators mediated by a qubit
- Cavity-free quantum optomechanical cooling by atom-modulated radiation
- Thermally induced entanglement of atomic oscillators
- Genuine non-Gaussian entanglement of light and quantum coherence for an atom from noisy multiphoton spin-boson interactions
- Entanglement growth via splitting of a few thermal quanta
- Coherence of quantum non-Gaussian states via nonlinear absorption of quanta