Reservoir-Engineered Entanglement in Optomechanical Systems

Wang, Ying-Dan; Clerk, Aashish A.

doi:10.1103/physrevlett.110.253601

Cited by 420 publications

(344 citation statements)

References 34 publications

Supporting

Mentioning

338

Contrasting

Unclassified

Order By: Relevance

“…We have taken parameters analogous to those of Ref. [16] that ω m = 2π × 10 MHz, G 1 = 2π × 2 MHz, κ 1 = κ 2 = 2π × 0.02 MHz, κ 3 = 2π × 0.5 MHz, γ m = 2π × 100 Hz, T = 300 mK and G 3 = 2π × 0 MHz (dashed-red line), 2π × 0.8 MHz (solid-blue line). When G 3 = 0, the maximum entanglement approaches 0.7.…”

Section: Resultsmentioning

confidence: 99%

“…The stability conditions can be obtained by use of the Routh-Hurwitz criteria [32]. Under the situation κ 1 = κ 2 = κ, the third cooling mode can be eliminated adiabatically, and the stability condition can be easily expressed as [9,16] …”

Section: Figmentioning

confidence: 99%

“…The situation that the two optomechanical couplings between the two target modes and the mechanical oscillator are equal can not be explained by the Bogoliubov-mode-based scheme [16]. This is connected with the ideas of quantum-mechanicsfree subspace [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

“…This method can be realized with a high-frequency, low-Q mechanical resonator or coupling a high-Q mechanical mode to the third cav-ity mode. In Ref [16] the thermal noise of the mechanical mode was not directly discussed.…”

Section: Introductionmentioning

confidence: 99%

“…Recently highly entangled quantum states (logarithmic negativity E N > 0.7 near the zero temperature) in optomechanical system are discussed via various methods, such as cascaded cavity coupling [15], reservoir engineering [16], Bogoliubov dark mode [17], Sørensen-Mølmer approach [18] and coherent feedback [19]. The crucial component in these ideas is the generation of twomode squeezing states.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Room-Temperature Steady-State Entanglement in a Four-Mode Optomechanical System

Wang

Zhang

2016

Commun. Theor. Phys.

View full text Add to dashboard Cite

Stationary entanglement in a four-mode optomechanical system, especially under roomtemperature, is discussed. In this scheme, when the coupling strengths between the two target modes and the mechanical resonator are equal, the results cannot be explained by the Bogoliubovmode-based scheme. This is related to the idea of quantum-mechanics-free subspace, which plays an important role when the thermal noise of the mechanical modes is considered. Significantly prominent steady-state entanglement can be available under room-temperature.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Room-Temperature Steady-State Entanglement in a Four-Mode Optomechanical System

Wang

Zhang

2016

Commun. Theor. Phys.

View full text Add to dashboard Cite

show abstract

Optoelectromechanical transducer: Reversible conversion between microwave and optical photons

Tian

2014

Annalen der Physik

View full text Add to dashboard Cite

Quantum states encoded in microwave photons or qubits can be effectively manipulated, whereas optical photons can be coherently transferred via optical fibre and waveguide. The reversible conversion of quantum states between microwave and optical photons will hence enable the distribution of quantum information over long distance and significantly improve the scalability of hybrid quantum systems. Owning to technological advances, mechanical resonators couple to quantum devices in distinctly different spectral range with tunable coupling, and can serve as a powerful interface to connect those devices. In this review, recent theory and experimental progress in the coherent conversion between microwave and optical fields via optoelectromechanical transducers are summarized. The challenges and perspectives in achieving single-photonlevel quantum state conversion are also discussed.

show abstract

The quantum/classical transition in mediated interactions

Buchmann

Stamper-Kurn

2014

Annalen der Physik

View full text Add to dashboard Cite

Two quantum modes interacting via local couplings to a dissipative bosonic field are investigated theoretically. The model considers two mechanical modes with distinct frequencies coupled optomechanically to the same cavity mode. The dissipative cavity field mediates the interaction between the mechanical modes but also leads to decoherence of the mechanical oscillators. Depending on the ratio between effective interaction strength and dissipation rate, which can be chosen via the pump detuning, the interaction assumes a quantum mechanical or classical character. The distinction between the two regimes is made by the ability of the mediated interaction to correlate the two mechanical modes non-classically. For any cavity decay, there is a regime where the two mechanical modes interact in a nonclassical way, which leads us to conclude that optomechanical systems can serve as a model to experimentally study the transition of effective interactions mediated by classical or quantum-mechanical fields.The emergence of a classical world from quantum theories remains a challenge to our understanding of physics. One important mechanism through which microscopic interactions manifest themselves in macroscopic effects is long-range forces, such as the Coulomb interaction or gravitation. In microscopic descriptions, Lorentz invariance requires these forces to be the result of modes coupling locally to "force carriers", such as the photon or the hypothetical graviton. Tracing out the mediating fieldwhose excitations are referred to as "virtual" since they cannot be directly measured -yields the effective longrange interaction.According to a recently proposed model, two bodies experiencing an effective, non-local interaction mediated by a classical, rather than a quantum field, will experience additional random forces due to the carrier's inability to create non-classical correlations [1]. This additional noise causes the position variances of the two interacting modes to increase at a rate larger than twice the effective coupling strength. In Ref.[2], the same bound was found starting from a different model, where the description of a classically mediated non-local interaction was based on quantum measurement theory. A field mediating a non-local interaction is a channel carrying information about the participating bodies across space. The authors of [1,2] draw the line between classically and quantum-mechanically interacting bodies at the ability of the force-carrier to transfer quantum information. If, for example, one of the bodies is in a non-classical superposition state, a quantum mechanical force-carrier would faithfully convey this and -in the appropriate basis -also be in a superposition state. A classical channel, however, could not transfer this quantum information and thus must carry additional noise affecting both participating bodies. Besides the fundamental question of a possible quantum character of gravitation, the classicality of an interaction is of practical importance to technological applications of quan...

show abstract

Reservoir-Engineered Entanglement in Optomechanical Systems

Cited by 420 publications

References 34 publications

Room-Temperature Steady-State Entanglement in a Four-Mode Optomechanical System

Room-Temperature Steady-State Entanglement in a Four-Mode Optomechanical System

Optoelectromechanical transducer: Reversible conversion between microwave and optical photons

The quantum/classical transition in mediated interactions

Contact Info

Product

Resources

About