Ultrastrong coupling regimes of light-matter interaction

Forn-Díaz, P.; Lamata, Lucas; Rico, E.; Kono, Junichiro; Solano, E.

doi:10.1103/revmodphys.91.025005

Cited by 903 publications

(856 citation statements)

References 313 publications

(533 reference statements)

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“…The rotating wave approximation is valid only when

g ≪ ω_{1}, ω_{2}

. If this is not the case, then the system is in the ultrastrong coupling or deep strong coupling regimes …”

Section: Cavitiesmentioning

confidence: 99%

“…If this is not the case, then the system is in the ultrastrong coupling or deep strong coupling regimes. [60,61] While the above discussion is framed in terms of photons in electromagnetic cavities, any other oscillating system that admits second quantization can be treated in the same way. In particular, mechanical vibrations in high Q membranes and beams can be described in terms of phonons, and excitations of magnetostatic modes as magnons.…”

Section: Weak and Strong Couplingmentioning

confidence: 99%

See 1 more Smart Citation

Coherent Conversion Between Microwave and Optical Photons—An Overview of Physical Implementations

et al. 2019

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Quantum information technology based on solid state qubits has created much interest in converting quantum states from the microwave to the optical domain. Optical photons, unlike microwave photons, can be transmitted by fiber, making them suitable for long distance quantum communication. Moreover, the optical domain offers access to a large set of very well‐developed quantum optical tools, such as highly efficient single‐photon detectors and long‐lived quantum memories. For a high fidelity microwave to optical transducer, efficient conversion at single photon level and low added noise is needed. Currently, the most promising approaches to build such systems are based on second‐order nonlinear phenomena such as optomechanical and electro‐optic interactions. Alternative approaches, although not yet as efficient, include magneto‐optical coupling and schemes based on isolated quantum systems like atoms, ions, or quantum dots. Herein, the necessary theoretical foundations for the most important microwave‐to‐optical conversion experiments are provided, their implementations are described, and the current limitations and future prospects are discussed.

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“…The rotating wave approximation is valid only when

g ≪ ω_{1}, ω_{2}

. If this is not the case, then the system is in the ultrastrong coupling or deep strong coupling regimes …”

Section: Cavitiesmentioning

confidence: 99%

Section: Weak and Strong Couplingmentioning

confidence: 99%

Coherent Conversion Between Microwave and Optical Photons—An Overview of Physical Implementations

et al. 2019

View full text Add to dashboard Cite

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“…Rabi interaction (RI), the direct coupling in the Rabi model between the quadrature variable of a quantized field and an atomic polarization in ultrastrong coupling regime [41][42][43], is naturally present at low frequencies in mechanical and microwave systems [44][45][46][47][48][49][50][51][52][53][54][55]. Recently, a sequence of RIs between a qubit and an oscillator has been proposed to induce the deterministic Kerr, cubic or arbitrary-order nonlinear phase gates [56,57].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Rabi interactions with traveling states of light

2020

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Keywords: quantum non-Gaussian states of light, quantum optics with photon addition and subtraction, hybrid discrete-continuousvariable quantum information, measurement-induced quantum operations Abstract Hybrid interactions between light and two-level systems and their nonlinear nature are crucial components of advanced quantum information processing and quantum networks. Rabi interaction (RI) exhibits the hybrid nonlinear nature, but its implementation is challenging at optical frequencies where the rotating wave approximation (RWA) is valid. Here, we propose a setup to conditionally induce RI between discrete variable and continuous variable of traveling beams of light. We show that our scheme can generate RI on weak states of light, where signatures of the nonlinear quantum effects are preserved for typical experimental losses. These results prove that a hybrid RI can be realized in all-optical setups, and open a way to experimental investigations of nonlinear quantum optics beyond RWA.

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“…In the past decade, a new subfield focused on the so-called ultrastrong coupling regime where the atom-cavity coupling constant is comparable to a fraction of the bare atomic and cavity frequencies and the rotating wave approximation is no longer valid has emerged. [58,59,60,61,62]. The emergence of new systems with with stronger coupling between two level systems and cavity modes warrants detailed modeling of the dynamics of cavity QED systems.…”

Section: Introductionmentioning

confidence: 99%

Comparison of semiclassical and quantum models of a two-level atom-cavity QED system in the strong coupling regime

Musa

Temimi

2019

Journal of Modern Optics

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We present a numerical study comparing semiclassical and quantum models of a damped, strongly interacting cavity QED system composed of a single two-level atom interacting with a single quantized cavity mode driven externally by a tunable monochromatic field. We compute the steady state transmission spectrum of the coupled system under each model and show that in the strong coupling regime, the two models yield starkly different results. The fully quantum mechanical model of the system correctly yields the expected multiphoton transmission spectra while the semiclassical approach results in a bistable spectrum.

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Ultrastrong coupling regimes of light-matter interaction

Cited by 903 publications

References 313 publications

Coherent Conversion Between Microwave and Optical Photons—An Overview of Physical Implementations

Coherent Conversion Between Microwave and Optical Photons—An Overview of Physical Implementations

Hybrid Rabi interactions with traveling states of light

Comparison of semiclassical and quantum models of a two-level atom-cavity QED system in the strong coupling regime

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