<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>n</mml:mi></mml:math>
-photon blockade with an 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>n</mml:mi></mml:math>
-photon parametric drive

Zhang, Yan; Minganti, Fabrizio; Qin, Wei; Wu, Qi‐Cheng; Zhao, Jiaxin; Fang, Yu-Liang; Nori, Franco; Yang, Chui‐Ping

doi:10.1103/physreva.104.053718

Cited by 24 publications

(7 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this case, the pump mode is treated classically and its quantum nature is neglected [29][30][31]. Such a type of DPA is called semiclassical, and its intracavity squeezing has been extensively studied for various applications [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46]. For example, applying a semiclassical DPA to the Jaynes-Cummings model can enhance the ability of cavity and circuit quantum electrodynamics systems to process quantum information, which was predicted in Refs.…”

Section: Physical Modelmentioning

confidence: 99%

Proposal of ensemble qubits with two-atom decay

Wei¹,

Miranowicz²,

Nori³

2023

Preprint

View full text Add to dashboard Cite

We propose and analyze a novel approach to implement ensemble qubits. The required anharmonicity is provided by a simultaneous decay of two atoms (i.e., two-atom decay), which is achieved by fully quantum degenerate parametric amplification. For an atomic ensemble, the two-atom decay generates and stabilizes a 2D quantum manifold, which is spanned by the ground and single-excited superradiant states. Moreover, this nonlinear decay process can strongly suppress transitions to higher-excited superradiant states, and convert residual transitions into an effective decay from the single-excitation superradiant state to the ground state. Our method does not require Rydberg dipole blockade and, thus, strong atom-atom interactions, compared to previous work. This indicates that it can be applied to typical atomic or spin ensembles in simple experimental setups. Remarkably, our idea is compatible with the cavity protection mechanism, and therefore spin dephasing due to inhomogeneous broadening can be strongly suppressed. The presented ensemble qubit provides a new platform for quantum information processing, and also extends the range of applications of atomic or spin ensembles.

show abstract

Section: Physical Modelmentioning

confidence: 99%

Proposal of ensemble qubits with two-atom decay

Wei¹,

Miranowicz²,

Nori³

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…However, the two-photon occupation probability P 2 does not change significantly due to detunings at the same time. Under the weak driving condition, the equal-time correlation function can be approximated as g (2) (0) ≈ 2P 2 /P 2 1 [30,45]. The significant increase of single-photon probability P 1 leads to the correlation function g (2) (0) tending to zero, which makes the strong PB triggered.…”

Section: Conventional Photon Blockadementioning

confidence: 99%

“…One is by adding an auxiliary cavity between two cavity modes [24], and the other is to add an auxiliary driving field so that the cavity and atoms are simultaneously driven [6]. Based on this feature, many schemes have been proposed to implement UPB, such as two coupled single-mode cavities with nonlinearity [24][25][26][27], cavity embedded with a quantum dot [28][29][30], degenerate optical parametric amplifier system [31][32][33], and two coupled superconducting resonators system [34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Simultaneously enhanced photon blockades in two microwave cavities via driving a giant atom

et al. 2023

View full text Add to dashboard Cite

We propose a scheme to enhance photon blockades simultaneously in two microwave cavities connected by a giant atom. In the case that only one cavity is weakly driven, we observe that the enhanced photon blockades occur in both cavities at the same time, which is attributed to the anharmonic eigenenergy spectrum constructed by the resonantly coupled giant atom. When the cavity and the atom are simultaneously driven, the stronger photon blockades in two cavities can be successfully achieved by the destructive quantum interference of two-photon excitation. Interestingly, we find that high single-photon occupations can be obtained in both cases. Moreover, we give the optimal conditions for conventional and unconventional photon blockades through analytical calculations, which are in good agreement with numerical results. Our scheme opens a prospective path to achieve simultaneous photon blockades in two indirectly coupled cavities, and provides a promising method to generate the high-quality and brightness single photon source.

show abstract

“…In recent years photon blockade effect has been studied intensively. The generation of entangled photon pairs and multi-photon sources have become valuable quantum effects, and two-photon and multi-photon blockade attracted a great deal of attention of many researchers [25,26]. The generation of photon blockade effect has been a popular topic and a target of interest.…”

Section: Introductionmentioning

confidence: 99%

Photon Blockade in the Fully Coupled Tripartite Hybrid System

Yan

Wang

2023

Preprint

View full text Add to dashboard Cite

We studied the fully coupled tripartite hybrid system with a two-level atom embodied in cavityopto-mechanical system. Applying the Shriever-Wolff approximation to the Hamiltonian of the sys-tem, we reached a fully diagonal effective Hamiltonian as well as its eigensystems. Thus the systemhas two turnable parameters including the detunings between the atom, cavity resonant frequencyand the driving laser field. We investigated the single- and two-photon blockade effects of the sys-tem under different detunings and cavity field driving strength using the probabilistic amplitudemethod and the quantum master equation method. The two-level atom plays an important role forthe photon blockade effect because it induces a shift of the cavity resonant frequency and a moreadjustable parameter for the system.

show abstract

n -photon blockade with an n -photon parametric drive

Cited by 24 publications

References 87 publications

Proposal of ensemble qubits with two-atom decay

Proposal of ensemble qubits with two-atom decay

Simultaneously enhanced photon blockades in two microwave cavities via driving a giant atom

Photon Blockade in the Fully Coupled Tripartite Hybrid System

Contact Info

Product

Resources

About