72 citations · 330 across the 44 of their papers we have counts for
34 papers · 1 filter
Oscillating Entropy and Spin Precession in the Ensemble of Qubits Interacting with Thermal Systems
Xiaoyu He, Zain H. Saleem, Vladimir I. Tsifrinovich
We present a simple model which allows us to explain the physical nature of the oscillating entropy. We consider an ensemble of qubits interacting with thermal two-level systems. T…
Non-Demolition Dispersive Measurement of a Superconducting Qubit with a Microstrip SQUID Amplifier
G. P. Berman, D. I. Kamenev, D. Kinion +1
We have studied the possibility of a single-shot non-demolition measurement of a superconducting qubit using a microstrip SQUID amplifier (MSA). The Johnson noise generated by all…
The Renormalization Effects in the Microstrip-SQUID Amplifier
G. P. Berman, A. A. Chumak, V. I. Tsifrinovich
The peculiarities of the microstrip-DC SQUID amplifier caused by the resonant structure of the input circuit are analyzed. It is shown that the mutual inductance, that couples the…
Non-demolition Adiabatic Measurement of the Phase Qubit State
G. P. Berman, A. A. Chumak, D. I. Kamenev +2
An adiabatic method for a single-shot non-demolition measurement of the phase qubit is suggested. The qubit is inductively coupled to a low-frequency resonator, which in turn is co…
Measurement of the Josephson Junction Phase Qubits by a Microstrip Resonator
Gennady P. Berman, Alan R. Bishop, Aleksandr A. Chumak +2
The process of measurement of a phase qubit by a resonant microwave cavity is considered for various interactions between the qubit and the cavity. A novel quasiclassical approach…
Influence of qubit displacements on quantum logic operations in a silicon-based quantum computer with constant interaction
D. I. Kamenev, G. P. Berman, V. I. Tsifrinovich
The errors caused by qubit displacements from their prescribed locations in an ensemble of spin chains are estimated analytically and calculated numerically for a quantum computer…