Quantum Nondemolition Measurement of a Nonclassical State of a Massive Object

Lecocq, Florent; Clark, J. B.; Simmonds, Raymond W.; Aumentado, José; Teufel, John

doi:10.1103/physrevx.5.041037

Cited by 279 publications

(277 citation statements)

References 36 publications

Supporting

Mentioning

275

Contrasting

Order By: Relevance

“…The combination of these techniques allows us to overcome the previous limitations and realize a photon-phonon quantum interface. Our experiment complements previous work on singleand two-mode (opto-)mechanical squeezing in microwave circuits [20][21][22][23]. Although these experiments were based on the same underlying interactions, they involved homodyne or heterodyne detection of light to access continuous-variable degrees of freedom of a quantum state -specifically, quadrature fluctuations in the mechanical and optical canonical variables.…”

mentioning

confidence: 56%

“…Further progress in quantum state control has mainly been limited to the domain of electromechanical devices, in which mechanical motion couples to superconducting circuits in the form of qubits and microwave cavities [15]. Recent achievements include single-phonon control of a micromechanical resonator by a superconducting flux qubit [16], the generation of quantum entanglement between quadratures of a microwave cavity field and micromechanical motion [20], and the preparation of quantum squeezed micromechanical states [21][22][23].…”

mentioning

confidence: 99%

See 1 more Smart Citation

Non-classical correlations between single photons and phonons from a mechanical oscillator

Riedinger

Hong

Norte

et al. 2016

Nature

468

437

View full text Add to dashboard Cite

Interfacing a single photon with another quantum system is a key capability in modern quantum information science. It allows quantum states of matter, such as spin states of atoms [1,2], atomic ensembles [3,4] or solids [5], to be prepared and manipulated by photon counting and, in particular, to be distributed over long distances. Such light-matter interfaces have become crucial to fundamental tests of quantum physics [6] and realizations of quantum networks [7]. Here we report non-classical correlations between single photons and phonons -the quanta of mechanical motion -from a nanomechanical resonator. We implement a full quantu protocol involving initialization of the resonator in its quantum ground state of motion and subsequent generation and read-out of correlated photon-phonon pairs. The observed violation of a Cauchy-Schwarz inequality is clear evidence for the non-classical nature of the mechanical state generated. Our results demonstrate the availability of on-chip solid-state mechanical resonators as light-matter quantum interfaces. The performance we achieved will enable studies of macroscopic quantum phenomena [8] as well as applications in quantum communication [9], as quantum memories [10] and as quantum transducers [11,12].Over the past few years, nanomechanical devices have been discussed as possible building blocks for quantum information architectures [9,13]. Their unique feature is that they combine an engineerable solid-state platform on the nanoscale with the possibility to coherently interact with a variety of physical quantum systems including electronic or nuclear spins, single charges, and photons [14,15]. This feature enables mechanics-based hybrid quantum systems that interconnect different, independent physical qubits through mechanical modes.A successful implementation of such quantum transducers requires the ability to create and control quantum states of mechanical motion. The first step -the initialization of micro-and nanomechanical systems in their quantum ground state of motion -has been realized in various mechanical systems either through direct cryogenic cooling [16,17] or laser cooling using microwave [18] and optical cavity fields [19]. Further progress in quantum state control has mainly been limited to the domain of electromechanical devices, in which mechanical motion couples to superconducting circuits in the form of qubits and microwave cavities [15]. Recent achievements include single-phonon control of a micromechanical resonator by a superconducting flux qubit [16], the generation of quantum entanglement between quadratures of a microwave cavity field and micromechanical motion [20], * This work was published in Nature 530, 313-316 (2016 Interfacing mechanics with optical photons in the quantum regime is highly desirable because it adds important features such as the ability to transfer mechanical excitations over long distances [9,24]. In addition, the available toolbox of single-photon generation and detection allows for remote quantum state control [7]. However...

show abstract

mentioning

confidence: 56%

mentioning

confidence: 99%

Non-classical correlations between single photons and phonons from a mechanical oscillator

Riedinger

Hong

Norte

et al. 2016

Nature

468

437

View full text Add to dashboard Cite

show abstract

“…Recently, cooling to the ground state [15][16][17], as well as elements of quantum behavior such as squeezing [18][19][20] and coherent qubit coupling [15,21,22], has become accessible with mechanical resonators of this scale. Superconducting charge or flux qubits coupled to mechanical resonators offer a path to achieving coupling strength exceeding the qubit decoherence rate, allowing the study of mechanical quantum states [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Displacemon Electromechanics: How to Detect Quantum Interference in a Nanomechanical Resonator

et al. 2018

View full text Add to dashboard Cite

We introduce the "displacemon" electromechanical architecture that comprises a vibrating nanobeam, e.g., a carbon nanotube, flux coupled to a superconducting qubit. This platform can achieve strong and even ultrastrong coupling, enabling a variety of quantum protocols. We use this system to describe a protocol for generating and measuring quantum interference between trajectories of a nanomechanical resonator. The scheme uses a sequence of qubit manipulations and measurements to cool the resonator, to apply two effective diffraction gratings, and then to measure the resulting interference pattern. We demonstrate the feasibility of generating a spatially distinct quantum superposition state of motion containing more than 10 6 nucleons using a vibrating nanotube acting as a junction in this new superconducting qubit configuration.

show abstract

“…Other examples, where the merging of the concepts of optics and mechanics were shown to be useful, are optical and mechanical squeezing [6][7][8], the generation of entanglement [9,10], gravitational wave detection [11], optomechanically induced transparency (OMIT) [12,13], and quantum state teleportation [14]. The related optical manipulation of mechanical degrees of freedom extensively contributed to the fields of precise measurements and sensing [15][16][17][18][19][20], manybody physics [21][22][23], and was theorized to have implications for quantum computing [24] and communication [25].…”

Section: Introductionmentioning

confidence: 99%

Interactive optomechanical coupling with nonlinear polaritonic systems

et al. 2017

View full text Add to dashboard Cite

We study a system of interacting matter quasiparticles strongly coupled to photons inside an optomechanical cavity. The resulting normal modes of the system are represented by hybrid polaritonic quasiparticles, which acquire effective nonlinearity. Its strength is influenced by the presence of a mechanical mode and depends on the resonance frequency of the cavity. This leads to an interactive type of optomechanical coupling, which is distinct from previously studied dispersive and dissipative couplings in optomechanical systems. The emergent interactive coupling is shown to generate effective optical nonlinearity terms of high order, which are quartic in the polariton number. We consider particular systems of exciton polaritons and dipolaritons, and show that the induced effective optical nonlinearity due to interactive coupling can exceed in magnitude the strength of Kerr nonlinear terms, such as those arising from polariton-polariton interactions. As applications, we show that the higher-order terms give rise to localized bright flattop solitons, which may form spontaneously in polariton condensates.

show abstract

Quantum Nondemolition Measurement of a Nonclassical State of a Massive Object

Cited by 279 publications

References 36 publications

Non-classical correlations between single photons and phonons from a mechanical oscillator

Non-classical correlations between single photons and phonons from a mechanical oscillator

Displacemon Electromechanics: How to Detect Quantum Interference in a Nanomechanical Resonator

Interactive optomechanical coupling with nonlinear polaritonic systems

Contact Info

Product

Resources

About