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Fisher Information, Weak Values and Correlated Noise in Interferometry
(Cornell University, 2019-02-25)
In this article we present an experimental proposal for quantum enhanced estimation of optomechanical parameters. The precision of the estimation is improved by using the technique of weak value amplification, which can ...
Photon cooling by dispersive atom-field coupling with atomic postselection
(Cornell University, 2019-04-16)
We propose, in a Ramsey interferometer, to cool the cavity field to its ground state, starting from a thermal distribution by a dispersive atom-field coupling followed by an atomic postselection. We also analyze the effect ...
Coherence as a measure for non-Markovianity and its applications to color centers in diamond
(American Physical Society, 2019-04-30)
The degree of non-Markovianity of a continuous bath can be quantified by means of the coherence. This simple measure is experimentally accessible through Ramsey spectroscopy, but it is limited to incoherent dynamical maps. ...
Breaking the optomechanical cooling limit by two drive fields on a membrane-in-the-middle system
(AMER PHYSICAL SOC, 2019)
We present a theoretical scheme for ground-state cooling of a mechanical resonator in a membrane-in-themiddle optomechanical system (OMS) driven by two red-detuned drive fields. The details of dynamical evolution of OMS ...
Storage and retrieval of interacting photons in a Rydberg medium
(AMER PHYSICAL SOC, 2019)
Storing interacting photons in ensembles of highly excited Rydberg atoms makes it possible to realize photon-photon gates. The efficiency of stopping and retrieving pairs of single-photon pulses in any Rydberg medium is, ...
Optimizing synthetic diamond samples for quantum sensing technologies by tuning the growth temperature
(ELSEVIER SCIENCE SA, 2019)
Control of the crystalline orientation of nitrogen-vacancy (NV) defects in diamond is here demonstrated by tuning the temperature of chemical vapor deposition (CVD) growth on a (113)-oriented diamond substrate. We show ...
Experimental quantum tomography assisted by multiply symmetric states in higher dimensions
(AMER PHYSICAL SOC, 2019)
High-dimensional quantum information processing has become a mature field of research with several different approaches being adopted for the encoding of D-dimensional quantum systems. Such progress has fueled the search ...
Effects of gain saturation on the quantum properties of light in a non-Hermitian gain-loss coupler
(AMER PHYSICAL SOC, 2019)
Gain saturation is ubiquitous but has not been fully explored in the newly developed field of non-Hermitian optics. On the other hand, the nonclassical properties of light are highly relevant to the gain saturation that ...
Weak-value amplification of photon-number operators in the optomechanical interaction
(AMER PHYSICAL SOC, 2019)
An experimental proposal is presented in which dark port postselection together with weak measurements are used to enlarge the radiation pressure effect of a single photon on a mechanical oscillator placed in the middle ...
Quantum Discord, Thermal Discord, and Entropy Generation in the Minimum Error Discrimination Strategy
(MDPI, 2019)
We study the classical and quantum correlations in the minimum error discrimination (ME) of two non-orthogonal pure quantum states. In particular, we consider quantum discord, thermal discord and entropy generation. We ...