191 citations · 1.9k across the 47 of their papers we have counts for
16 papers · 1 filter
Stepping closer to pulsed single microwave photon detectors for axions search
A. D'Elia, A. Rettaroli, S. Tocci +23
Axions detection requires the ultimate sensitivity down to the single photon limit. In the microwave region this corresponds to energies in the yJ range. This extreme sensitivity h…
Single-atom maser with engineered circuit for population inversion
A. A. Sokolova, G. P. Fedorov, E. V. Il'ichev +1
We present a blueprint for a maser with a single three-level transmon superconducting artificial atom. The system can be pumped coherently via a two-photon process, and to achieve…
Probabilistic motional averaging
D. S. Karpov, V. Y. Monarkha, D. Szombati +6
In a continuous measurement scheme a spin-1/2 particle can be measured and simultaneously driven by an external resonant signal. When the driving is weak, it does not prevent the p…
Experimental system design for the integration of trapped-ion and superconducting qubit systems
D. De Motte, A. R. Grounds, M. Rehák +8
We present a design for the experimental integration of ion trapping and superconducting qubit systems as a step towards the realization of a quantum hybrid system. The scheme addr…
Simulating long-distance entanglement in quantum spin chains by superconducting flux qubits
Stefano Zippilli, Miroslav Grajcar, Evgeni Il'ichev +1
We investigate the performance of superconducting flux qubits for the adiabatic quantum simulation of long distance entanglement (LDE), namely a finite ground-state entanglement be…
Toroidal qubits: naturally-decoupled quiet artificial atoms
Alexandre M. Zagoskin, Arkadi Chipouline, Evgeni Il'ichev +2
The requirements of quantum computations impose high demands on the level of qubit protection from perturbations; in particular, from those produced by the environment. Here we pro…
How to test the "quantumness" of a quantum computer?
Alexandre M. Zagoskin, Evgeni Ilichev, Miroslav Grajcar +2
We discuss whether, to what extent and how a quantum computing device can be evaluated and simulated using classical tools.
Quantized resonator field coupled to a current-biased Josephson junction in circuit QED
Christian Kraglund Andersen, Gregor Oelsner, Evgeni Il'ichev +1
A Lagrangian formalism is used to derive the Hamiltonian for a /4 resonator shunted by a current-biased Josephson junction. The eigenstates and the quantum dynamics of the syste…
Electromagnetically induced transparency and Autler-Townes splitting in superconducting flux quantum circuits
Hui-Chen Sun, Yu-xi Liu, J. Q. You +2
We study the microwave absorption of a driven three-level quantum system, which is realized by a superconducting flux quantum circuit (SFQC), with a magnetic driving field applied…
Implementation of a Quantum Metamaterial
Pascal Macha, Gregor Oelsner, Jan-Michael Reiner +7
Manipulating the propagation of electromagnetic waves through sub-wavelength sized artificial structures is the core function of metamaterials. Resonant structures, such as split r…
Is a single photon's wave front observable?
A. M. Zagoskin, R. D. Wilson, M. Everitt +5
The ultimate goal and the theoretical limit of weak signal detection is the ability to detect a single photon against a noisy background. [...] In this paper we show, that a combin…
Frequency Division Multiplexing Readout and Simultaneous Manipulation of an Array of Flux Qubits
Markus Jerger, Stefano Poletto, Pascal Macha +3
An important desired ingredient of superconducting quantum circuits is a readout scheme whose complexity does not increase with the number of qubits involved in the measurement. He…
Heat cost of parametric generation of microwave squeezed states
A. M. Zagoskin, E. Il'ichev, Franco Nori
In parametric systems, squeezed states of radiation can be generated via extra work done by external sources. This eventually increases the entropy of the system despite the fact t…
Noise-induced quantum coherence and persistent Rabi oscillations in a Josephson flux qubit
A. N. Omelyanchouk, S. Savel'ev, A. M. Zagoskin +2
We demonstrate theoretically the noise-stimulated enhancement of quantum coherence in a superconducting flux qubit. First, an external classical noise can increase the off-diagonal…
A characterization of global entanglement
Peter J. Love, Alec Maassen van den Brink, A. Yu. Smirnov +5
We define a set of entanglement monotones for qubits and give a single measure of entanglement in terms of these. This measure is zero except on globally entangled…
Rabi spectroscopy for a two-level system
Ya. S. Greenberg, E. Il'ichev
We have analyzed the interaction of a dissipative two level quantum system with high and low frequency excitation. The system is continuously and simultaneously irradiated by these…