Observation of Resonant Photon Blockade at Microwave Frequencies Using Correlation Function Measurements

Lang, C. B.; Bozyigit, Deniz; Eichler, Christopher; Steffen, L.; Fink, J. M.; Abdumalikov, A. A.; Baur, M.; Filipp, Stefan; Silva, Marcus; Blais, Alexandre; Wallraff, Andreas

doi:10.1103/physrevlett.106.243601

Cited by 380 publications

(336 citation statements)

References 35 publications

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“…An efficient single-photon source should be benchmarked against the current state-of-the-art, represented by quantum emitters in resonant cavities [4][5][6][7][8][9][10][11], and heralded sources [12][13][14][15][16]. Recent advances have led to closeto-ideal single-photon operation for both schemes.…”

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confidence: 99%

“…Current realizations based on blockade mechanisms [3] unavoidably require a strong optical nonlinearity. They are usually engineered with such systems as quantum dots [4][5][6][7][8], diamond color centers [9], superconducting circuits [10] or trapped atoms [11]. Although the degree of control over these systems is steadily improving, they basically operate at cryogenic temperatures and (or) imply significant fabrication challenges, particularly with respect to integration and scalability in future photonic platforms.…”

Section: Introductionmentioning

confidence: 99%

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Single photons from dissipation in coupled cavities

Flayac

Savona

2016

Phys. Rev. A

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We propose a single photon source based on a pair of weakly nonlinear optical cavities subject to a one-directional dissipative coupling. When both cavities are driven by mutually coherent fields, sub-poissonian light is generated in the target cavity even when the nonlinear energy per photon is much smaller than the dissipation rate. The sub-poissonian character of the field holds over a delay measured by the inverse photon lifetime, as in the conventional photon blockade, thus allowing single-photon emission under pulsed excitation. We discuss a possible implementation of the dissipative coupling relevant to photonic platforms.

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Section: Fig 3: (Color Online)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Single photons from dissipation in coupled cavities

Flayac

Savona

2016

Phys. Rev. A

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“…The photon blockade results in a highly nonclassical emission of photons from the cavity, characterized by a strong antibunching. The photon blockade has been investigated theoretically and experimentally in a large variety of systems, such as atomic cavity QED [10,11], semiconductor nanostructures [12,13] and superconducting circuits [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Fate of photon blockade in the deep strong-coupling regime

Boité¹,

Hwang²,

Nha³

et al. 2016

Phys. Rev. A

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We investigate the photon emission properties of the driven-dissipative Rabi model in the socalled ultrastrong and deep strong coupling regimes, where the atom-cavity coupling rate g becomes comparable or larger than the cavity frequency ωc. By solving numerically the master equation in the dressed-state basis, we compute the output field correlation functions in the steady-state for a wide range of coupling rates. We find that, as the atom-cavity coupling strength increases, the system undergoes multiple transitions in the photon statistics. In particular, a first sharp anti-bunching to bunching transition, occurring at g ∼ 0.45ωc, leading to the breakdown of the photon blockade due to the counter-rotating terms, is shown to be the consequence of a parity shift in the energy spectrum. A subsequent revival of the photon blockade and the emergence of the quasi-coherent statistics, for even larger coupling rates, are attributed to an interplay between the nonlinearity in the energy spectrum and the transition rates between the dressed states.

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“…The normalized cross-correlation function violates the Cauchy-Schwarz inequality, confirming the nonclassical character of the correlations. Photons are unique carriers of quantum information that can be strongly interfaced with atoms for quantum state generation and processing [1][2][3][4][5][6][7][8][9]. Quantum state detection, a particular type of processing, is at the heart of quantum mechanics and has profound implications for quantum information technologies.…”

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confidence: 99%

Partially Nondestructive Continuous Detection of Individual Traveling Optical Photons

et al. 2016

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We report the continuous and partially nondestructive measurement of optical photons. For a weak light pulse traveling through a slow-light optical medium (signal), the associated atomic-excitation component is detected by another light beam (probe) with the aid of an optical cavity. We observe strong correlations of g ð2Þ sp ¼ 4.4ð5Þ between the transmitted signal and probe photons. The observed (intrinsic) conditional nondestructive quantum efficiency ranges between 13% and 1% (65% and 5%) for a signal transmission range of 2% to 35%, at a typical time resolution of 2.5 μs. The maximal observed (intrinsic) device nondestructive quantum efficiency, defined as the product of the conditional nondestructive quantum efficiency and the signal transmission, is 0.5% (2.4%). The normalized cross-correlation function violates the Cauchy-Schwarz inequality, confirming the nonclassical character of the correlations. DOI: 10.1103/PhysRevLett.116.033602 Photons are unique carriers of quantum information that can be strongly interfaced with atoms for quantum state generation and processing [1][2][3][4][5][6][7][8][9]. Quantum state detection, a particular type of processing, is at the heart of quantum mechanics and has profound implications for quantum information technologies. Photons are standardly detected by converting a photon's energy into a measurable signal, thereby destroying the photon. Nondestructive photon detection, which is of interest for many quantum optical technologies [10][11][12], is possible through strong nonlinear interactions [12] that ideally form a quantum nondemolition measurement [13]. To date, quantum nondemolition measurement of single microwave photons bound to cooled cavities has been demonstrated with high fidelity using Rydberg atoms [14][15][16], and in a circuit cavity quantum electrodynamics system using a superconducting qubit [17].For quantum communication and many other photonics quantum information applications [18,19], it is desirable to detect traveling optical photons instead of photons bound to cavities. Previously, a single-photon transistor was realized using an atomic ensemble inside a high finesse cavity where one stored photon blocked the transmission of more than one cavity photon and could still be retrieved [5]. Such strong cross-modulation [20] can be used for all-optical destructive detection of the stored optical photon, but the parameters in that experiment did not allow nondestructive detection with any appreciable efficiency. High-efficiency pulsed nondestructive optical detection has recently been achieved using a single atom in a cavity [21]. In that implementation, the atomic state is prepared in 250 μs, altered by the interaction with an optical pulse reflected from the cavity, and read out in 25 μs.In this Letter, we realize partially nondestructive, continuous detection of traveling optical photons with microsecond time resolution. The signal photons to be detected propagate through an atomic ensemble as slow-light polaritons [22] under conditions of electro...

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Observation of Resonant Photon Blockade at Microwave Frequencies Using Correlation Function Measurements

Cited by 380 publications

References 35 publications

Single photons from dissipation in coupled cavities

Single photons from dissipation in coupled cavities

Fate of photon blockade in the deep strong-coupling regime

Partially Nondestructive Continuous Detection of Individual Traveling Optical Photons

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