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- David I. Schuster, Adam P. Sears, +8 authors Robert J. Schoelkopf
- Physical review letters
- 2010

Electron spins in solids are promising candidates for quantum memories for superconducting qubits because they can have long coherence times, large collective couplings, and many qubits could be encoded into spin waves of a single ensemble. We demonstrate the coupling of electron-spin ensembles to a superconducting transmission-line cavity at strengthsâ€¦ (More)

- Gerhard Kirchmair, Brian Vlastakis, +7 authors Robert J. Schoelkopf
- Nature
- 2013

To create and manipulate non-classical states of light for quantum information protocols, a strong, nonlinear interaction at the single-photon level is required. One approach to the generation of suitable interactions is to couple photons to atoms, as in the strong coupling regime of cavity quantum electrodynamic systems. In these systems, however, theâ€¦ (More)

- Kater W. Murch, SÃ©bastien J Weber, Kristin M Beck, Eran Ginossar, Irfan Siddiqi
- Nature
- 2013

Quantum fluctuations of the electromagnetic vacuum are responsible for physical effects such as the Casimir force and the radiative decay of atoms, and set fundamental limits on the sensitivity of measurements. Entanglement between photons can produce correlations that result in a reduction of these fluctuations below the ordinary vacuum level, allowingâ€¦ (More)

- Lev S. Bishop, Eran Ginossar, Steven M. Girvin
- Physical review letters
- 2010

We analyze the Jaynes-Cummings model of quantum optics, in the strong-dispersive regime. In the bad-cavity limit and on time scales short compared to the atomic coherence time, the dynamics are those of a nonlinear oscillator. A steady-state nonperturbative semiclassical analysis exhibits a finite region of bistability delimited by a pair of criticalâ€¦ (More)

- Blake R. Johnson, Mason Reed, +8 authors R. J. Schoelkopf
- 2010

B. R. Johnson, M. D. Reed, A. A. Houck, D. I. Schuster, Lev S. Bishop, E. Ginossar, J. M. Gambetta, L. DiCarlo, L. Frunzio, S. M. Girvin, and R. J. Schoelkopf Departments of Physics and Applied Physics, Yale University, New Haven, CT 06511, USA Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA Institute for Quantumâ€¦ (More)

- Lev S. Bishop, Lars Tornberg, +8 authors Robert J. Schoelkopf
- 2009

We propose methods for the preparation and entanglement detection of multi-qubit Greenbergerâ€“Horneâ€“Zeilinger (GHZ) states in circuit quantum electrodynamics. Using quantum trajectory simulations appropriate for the situation of a weak continuous measurement, we show that the joint dispersive readout of several qubits can be utilized for the probabilisticâ€¦ (More)

Jaewoo Joo, 2 Matthew Elliott, Daniel K. L. Oi, Eran Ginossar, and Timothy P. Spiller Quantum Information Science, School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, U.K. Advanced Technology Institute and Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom SUPA Department of Physics, University of Strathclyde,â€¦ (More)

- Eran Ginossar, Eytan Grosfeld
- Nature communications
- 2014

Solid-state Majorana fermions are generating intensive interest because of their unique properties and possible applications in fault tolerant quantum memory devices. Here we propose a method to detect signatures of Majorana fermions in hybrid devices by employing the sensitive apparatus of the superconducting charge-qubit architecture and its efficientâ€¦ (More)

When a frequency chirped excitation is applied to a classical high-Q nonlinear oscillator, its motion becomes dynamically synchronized to the drive and large oscillation amplitude is observed, provided the drive strength exceeds the critical threshold for autoresonance. We demonstrate that when such an oscillator is strongly coupled to a quantizedâ€¦ (More)

We study the dynamics of a general quartic interaction Hamiltonian under the influence of dissipation and nonclassical driving. We show that this scenario could be realized with a cascaded superconducting cavity-qubit system in the strong dispersive regime in a setup similar to recent experiments. In the presence of dissipation, we find that an effectiveâ€¦ (More)