Extensible quantum simulation architecture based on atom-photon bound states in an array of high-impedance resonators

Scigliuzzo, Marco; Calajò, Giuseppe; Ciccarello, Francesco; Lozano, Daniel Pérez; Bengtsson, Andreas; Scarlino, Pasquale; Wallraff, Andreas; Chang, Darrick E.; Delsing, Per; Gasparinetti, Simone

doi:10.48550/arxiv.2107.06852

Cited by 3 publications

(10 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lastly, we provide formulas for the regime g J, although we illustrate the results for g J. We note that this theoretical model may be used to represent cold atoms coupled to photonic crystal waveguides [16] or optical lattices [17,18], as well as superconducting qubits coupled to microwave photonic crystals [19][20][21] or superconducting metamaterials [14,[22][23][24]. That being said, the experimental realization of cold atoms in the giant-atom regime remains elusive and thus we consider our setup to be most readily implementable with superconducting qubits.…”

Section: A Theoretical Modelmentioning

confidence: 99%

“…Furthermore, multiple atoms coupled to the same reservoir can interact through the overlap of their bound-state photonic wavefunctions [11][12][13]. These interactions can be tuned by modifying the frequencies of the atoms and their coupling strengths to the bath, which opens doors for applications in quantum simulation and computation [14].…”

Section: Introductionmentioning

confidence: 99%

“…Many different platforms have been used to demonstrate phenomena arising from the interaction between an atom and a structured environment [15]. These include cold atoms coupled to either photonic crystal waveguides [16] or to an optical lattice [17,18], as well as superconducting qubits coupled to either a microwave photonic crystal [19][20][21] or to a superconducting metamaterial [14,[22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, we conclude that preference of a giant-atom design over a small-atom design might depend on the experimental constraints and the intended application. Possible applications include quantum simulation [56,57], as well as implementation of entangling or SWAP gates for quantum computing [14].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Interaction between giant atoms in a one-dimensional structured environment

Soro¹,

Muñoz²,

Kockum³

2022

Preprint

View full text Add to dashboard Cite

Giant atoms-quantum emitters that couple to light at multiple discrete points-are emerging as a new paradigm in quantum optics thanks to their many promising properties, such as decoherencefree interaction. While most previous work has considered giant atoms coupled to open continuous waveguides or a single giant atom coupled to a structured bath, here we study the interaction between two giant atoms mediated by a structured waveguide, e.g., a photonic crystal waveguide. This environment is characterized by a finite energy band and a band gap, which affect atomic dynamics beyond the Markovian regime. Here we show that, inside the band, decoherence-free interaction is possible for different atom-cavity detunings, but is degraded from the continuouswaveguide case by time delay and other non-Markovian effects. Outside the band, where atoms interact through the overlap of bound states, we find that giant atoms can interact more strongly and over longer distances than small atoms for some parameters-for instance, when restricting the maximum coupling strength achievable per coupling point. The results presented here may find applications in quantum simulation and quantum gate implementation.

show abstract

Section: A Theoretical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Interaction between giant atoms in a one-dimensional structured environment

Soro¹,

Muñoz²,

Kockum³

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The specific realization of the qubit is flexible and platform-dependent. It can be achieved, for example, by a transmon within a purely superconducting setting [27,28,30,31] or by a quantum dot in the case of hybrid devices [29,[32][33][34][35][36][37].…”

Section: Entangling the Topological Modesmentioning

confidence: 99%

Topological Entanglement Stabilization in Superconducting Quantum Circuits

Jin¹,

Greplová²

2022

Preprint

View full text Add to dashboard Cite

Topological properties of quantum systems are one of the most intriguing emerging phenomena in condensed matter physics. A crucial property of topological systems is the symmetry-protected robustness towards local noise. Experiments have demonstrated topological phases of matter in various quantum systems. However, using the robustness of such modes to stabilize quantum correlations is still a highly sought-after milestone. In this work, we put forward a concept of using topological modes to stabilize fully entangled quantum states, and we demonstrate the stability of the entanglement with respect to parameter fluctuations. Specifically, we see that entanglement remains stable against parameter fluctuations in the topologically non-trivial regime, while entanglement in the trivial regime is highly susceptible to local noise. We supplement our scheme with an experimentally realistic and detailed proposal based on coupled superconducting resonators and qubits. Our proposal sets a novel approach for generating long-lived quantum modes with robustness towards disorder in the circuit parameters via a bottom-up experimental approach relying on easy-to-engineer building blocks.

show abstract

Chiral SQUID-metamaterial waveguide for circuit-QED

Wang

Lin

et al. 2022

New J. Phys.

View full text Add to dashboard Cite

Superconducting metamaterials, which are designed and fabricated with structured fundamental circuit elements, have motivated recent developments of exploring unconventional quantum phenomena in circuit quantum electrodynamics (circuit-QED). We propose a method to engineer 1D Josephson metamaterial as a chiral waveguide by considering a programmed spatiotemporal modulation on its effective impedance. The modulation currents are in the form of traveling waves which phase velocities are much slower than the propagation speed of microwave photons. Due to the Brillouin-scattering process, non-trivial spectrum regimes where photons can propagate unidirectionally emerge. Considering superconducting qubits coupling with this metamaterial waveguide, we analyze both Markovian and non-Markovian quantum dynamics, and find that superconducting qubits can dissipate photons unidirectionally. Moreover, we show that our proposal can be extended a cascaded quantum network with multiple nodes, where chiral photon transport between remote qubits can be realized. Our work might open the possibilities to exploit SQUID metamaterials for realizing unidirectional photon transport in circuit-QED platforms.

show abstract

Extensible quantum simulation architecture based on atom-photon bound states in an array of high-impedance resonators

Cited by 3 publications

References 53 publications

Interaction between giant atoms in a one-dimensional structured environment

Interaction between giant atoms in a one-dimensional structured environment

Topological Entanglement Stabilization in Superconducting Quantum Circuits

Chiral SQUID-metamaterial waveguide for circuit-QED

Contact Info

Product

Resources

About