Propagating quantum microwaves: towards applications in communication and sensing

M Casariego, EZ Cruzeiro, S Gherardini… - Quantum Science …, 2023 - iopscience.iop.org
The field of propagating quantum microwaves is a relatively new area of research that is
receiving increased attention due to its promising technological applications, both in …

Autonomous distribution of programmable multiqubit entanglement in a dual-rail quantum network

J Agustí, XHH Zhang, Y Minoguchi, P Rabl - Physical Review Letters, 2023 - APS
We propose and analyze a scalable and fully autonomous scheme for preparing spatially
distributed multiqubit entangled states in a dual-rail waveguide QED setup. In this approach …

Microwave photon-number amplification

R Albert, J Griesmar, F Blanchet, U Martel, N Bourlet… - Physical Review X, 2024 - APS
We experimentally demonstrate a microwave photon-multiplication scheme which combines
the advantages of a single-photon detector and a power meter by multiplying the incoming …

Two-tone spectroscopy of high-frequency quantum circuits with a Josephson emitter

A Peugeot, H Riechert, S Annabi, L Balembois… - Physical Review …, 2024 - APS
We perform two-tone spectroscopy on quantum circuits, where high-frequency radiation is
generated by a voltage-biased superconductor-normal-superconductor Josephson junction …

Photon-instanton collider implemented by a superconducting circuit

A Burshtein, R Kuzmin, VE Manucharyan… - Physical Review Letters, 2021 - APS
Instantons, spacetime-localized quantum field tunneling events, are ubiquitous in correlated
condensed matter and high-energy systems. However, their direct observation through …

Characterization of a Transmon Qubit in a 3D Cavity for Quantum Machine Learning and Photon Counting

A D'Elia, B Alfakes, A Alkhazaleh, L Banchi, M Beretta… - Applied Sciences, 2024 - mdpi.com
In this paper, we report the use of a superconducting transmon qubit in a 3D cavity for
quantum machine learning and photon counting applications. We first describe the …

Probabilistically violating the first law of thermodynamics in a quantum heat engine

T Kerremans, P Samuelsson, P Potts - SciPost Physics, 2022 - scipost.org
Fluctuations of thermodynamic observables, such as heat and work, contain relevant
information on the underlying physical process. These fluctuations are however not taken …

Engineering symmetry-selective couplings of a superconducting artificial molecule to microwave waveguides

MA Aamir, CC Moreno, S Sundelin, J Biznárová… - Physical Review Letters, 2022 - APS
Tailoring the decay rate of structured quantum emitters into their environment opens new
avenues for nonlinear quantum optics, collective phenomena, and quantum …

Hybrid Source of Quantum Light for Generation of Frequency Tunable Fock States

A Krstić, P Tiwari, F Höhe, F Setzpfandt, U Peschel… - Physical Review Letters, 2024 - APS
We propose a scheme for quantum-light generation in a nonlinear cavity hybridized with a
two-level system and theoretically show that, when excited by a series of controlled pump …

Microwave Photon Emission in Superconducting Circuits

AD′ Elia, A Rettaroli, F Chiarello, D Di Gioacchino… - Instruments, 2023 - mdpi.com
Quantum computing requires a novel approach to store data as quantum states, opposite to
classical bits. One of the most promising candidates is entangled photons. In this …