TY  - JOUR
A1  - Mari, A.
A1  - Eisert, J.
T1  - Cooling by Heating: Very Hot Thermal Light Can Significantly Cool
 Quantum Systems
JF  - PHYSICAL REVIEW LETTERS
N2  - We introduce the idea of actually cooling quantum systems by means of incoherent thermal light, hence giving rise to a counterintuitive mechanism of "cooling by heating." In this effect, the mere incoherent occupation of a quantum mechanical mode serves as a trigger to enhance the coupling between other modes. This notion of effectively rendering states more coherent by driving with incoherent thermal quantum noise is applied here to the optomechanical setting, where this effect occurs most naturally. We discuss two ways of describing this situation, one of them making use of stochastic sampling of Gaussian quantum states with respect to stationary classical stochastic processes. The potential of experimentally demonstrating this counterintuitive effect in optomechanical systems with present technology is sketched.
Y1  - 2012
U6  - https://doi.org/10.1103/PhysRevLett.108.120602
SN  - 0031-9007
VL  - 108
IS  - 12
PB  - AMER PHYSICAL SOC
CY  - COLLEGE PK
ER  - 
TY  - JOUR
A1  - Mari, A.
A1  - Eisert, J.
T1  - Opto- and electro-mechanical entanglement improved by modulation
JF  - New journal of physics : the open-access journal for physics
N2  - One of the main milestones in the study of opto- and electromechanical systems is to certify entanglement between a mechanical resonator and an optical or microwave mode of a cavity field. In this work, we show how a suitable time-periodic modulation can help to achieve large degrees of entanglement, building upon the framework introduced in Mari and Eisert (2009 Phys. Rev. Lett. 103 213603). It is demonstrated that with suitable driving, the maximum degree of entanglement can be significantly enhanced, in a way exhibiting a nontrivial dependence on the specifics of the modulation. Such time-dependent driving might help to experimentally achieve entangled mechanical systems also in situations when quantum correlations are otherwise suppressed by thermal noise.
Y1  - 2012
U6  - https://doi.org/10.1088/1367-2630/14/7/075014
SN  - 1367-2630
VL  - 14
PB  - IOP Publ. Ltd.
CY  - Bristol
ER  -