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We present the first measurement of squeezed-state entanglement between the twin beams produced in an Optical Parametric Oscillator (OPO) operating above threshold. Besides the usual squeezing in the intensity difference between the twin…

Quantum Physics · Physics 2009-11-11 A. S. Villar , L. S. Cruz , K. N. Cassemiro , M. Martinelli , P. Nussenzveig

In this article, we formulate the generation of optomechanical entanglement between the linearly coupled cavity field and the mechanical resonator as an optimal control problem in hyperbolic space $H^3$, with control input the coupling rate…

Quantum Physics · Physics 2018-04-17 Dionisis Stefanatos

We theoretically investigate a scheme to entangle two squeezed magnon modes in a double cavitymagnon system, where both cavities are driven by a two-mode squeezed vacuum microwave field. Each cavity contains an optical parametric amplifier…

Quantum Physics · Physics 2023-07-20 Shaik Ahmed , M. Amazioug , Jia-Xin Peng , S. K. Singh

The creation of nanoscale lasers that operate above a coherent threshold is a challenging problem. We propose a way to circumvent this issue using systems in which a strong coupling regime is achieved between the light and the active…

Levitated optomechanics is entering the multiparticle regime, paving the way for the use of arrays of strongly coupled massive oscillators to explore complex interacting quantum systems. Here, we demonstrate the trapping of two nanospheres…

We show that the optomechanical coupling between an optical cavity mode and the two movable cavity end mirrors is able to entangle two different macroscopic oscillation modes of the mirrors. This continuous variable entanglement is…

Quantum Physics · Physics 2009-11-07 Stefano Mancini , David Vitali , Vittorio Giovannetti , Paolo Tombesi

A Hamiltonian is presented, which can be used to convert any asymmetric state $|\varphi \rangle_{a}|\phi \rangle_{b}$ of two oscillators $a$ and $b$ into an entangled state. Furthermore, with this Hamiltonian and local operations only, two…

Quantum Physics · Physics 2017-05-31 Chui-Ping Yang , Qi-Ping Su , Shi-Biao Zheng , Franco Nori , Siyuan Han

Mechanical systems provide a unique test bed for studying quantum phenomena at macroscopic length scales. However, realizing quantum states that feature quantum correlations among macroscopic mechanical objects remains an experimental…

We investigate the entanglement and non-locality between specific spectral components of continuous variable two-mode squeezed mixed states, identifying their limits. These spectral components are selected from output modes using filters…

Quantum Physics · Physics 2025-04-23 Souvik Agasti

We study entanglement of the motional degrees of freedom of two tethered and optically trapped microdisks inside a single cavity. By properly choosing the position of the trapped objects in the optical cavity and driving proper modes of the…

Quantum Physics · Physics 2015-02-18 Mehdi Abdi , Michael J. Hartmann

We propose to create and detect opto-mechanical entanglement by storing one component of an entangled state of light in a mechanical resonator and then retrieving it. Using micro-macro entanglement of light as recently demonstrated…

Quantum Physics · Physics 2015-06-18 R. Ghobadi , S. Kumar , B. Pepper , D. Bouwmeester , A. I. Lvovsky , C. Simon

We investigate the creation of squeezed states of a vibrating membrane or a movable mirror in an opto-mechanical system. An optical cavity is driven by squeezed light and couples via radiation pressure to the membrane/mirror, effectively…

Quantum Physics · Physics 2009-06-30 K. Jaehne , C. Genes , K. Hammerer , M. Wallquist , E. S. Polzik , P. Zoller

We show how the coherent oscillations of a nanomechanical resonator can be entangled with a microwave cavity in the form of a superconducting coplanar resonator. Dissipation is included and realistic values for experimental parameters are…

Quantum Physics · Physics 2017-08-23 A. K. Ringsmuth , G. J. Milburn

We propose a scheme to entangle two mechanical nanocantilevers through indirect interactions mediated by a gas of ultra cold atoms. We envisage a system of nanocantilevers magnetically coupled to a Bose-Einstein condensate of atoms and…

Quantum Physics · Physics 2015-05-19 C. Joshi , A. Hutter , F. E. Zimmer , M. Jonson , E. Andersson , P. Ohberg

Stationary entanglement between the motion of macroscopic objects and light is a long-standing goal of quantum optomechanics, with implications for both fundamental tests of quantum physics and emerging quantum technologies. We report the…

Quantum Physics · Physics 2026-03-20 Q. Deplano , A. Pontin , F. Marino , F. Marin

We show how stationary entanglement between an optical cavity field mode and a macroscopic vibrating mirror can be generated by means of radiation pressure. We also show how the generated optomechanical entanglement can be quantified and we…

Quantum Physics · Physics 2007-05-23 D. Vitali , S. Gigan , A. Ferreira , H. R. Boehm , P. Tombesi , A. Guerreiro , V. Vedral , A. Zeilinger , M. Aspelmeyer

We analyze the steady-state entanglement between Bose-Einstein condensate trapped inside an optical cavity with a moving end mirror (nanomechanical resonator) driven by a single mode laser. The quantized laser field mediates the interaction…

Quantum Physics · Physics 2011-09-30 Muhammad Asjad , Farhan Saif

We propose a physical scheme to generate entangled light at high temperatures through the excitation of vacuum fluctuations of the electromagnetic field using periodic modulations of a refractive index of a ring resonator. We consider the…

Quantum Physics · Physics 2019-10-29 D. M. N. Magano , P. A. M. Macedo , A. Guerreiro

Collective phenomena emerging from non-linear interactions between multiple oscillators, such as synchronization and frequency locking, find applications in a wide variety of fields. Optomechanical resonators, which are intrinsically…

We propose two schemes to establish entanglement between two mesoscopic quantum systems through a third mesoscopic quantum system. The first scheme entangles two nano-mechanical oscillators in a non-Gaussian entangled state through a Cooper…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 S. Bose , G. S. Agarwal