68 citations · 407 across the 15 of their papers we have counts for
15 papers
Saturation of Two Level Systems and Charge Noise in Josephson Junction Qubits
Magdalena Constantin, Clare C. Yu, John M. Martinis
We study the charge noise in Josephson qubits produced by fluctuating two level systems (TLS) with electric dipole moments in the substrate. The TLS are driven by an alternat…
Effect of Two Level System Saturation on Charge Noise in Josephson Junction Qubits
Clare C. Yu, Magdalena Constantin, John M. Martinis
We show that charge noise in Josephson qubits can be produced by fluctuating two level systems (TLS) with electric dipole moments in the substrate using a flat density of sta…
Persistence and survival in equilibrium step fluctuations
M. Constantin, C. Dasgupta, S. Das Sarma +2
Results of analytic and numerical investigations of first-passage properties of equilibrium fluctuations of monatomic steps on a vicinal surface are reviewed. Both temporal and spa…
Microscopic Model of Critical Current Noise in Josephson Junctions
Magdalena Constantin, Clare C. Yu
We present a simple microscopic model to show how fluctuating two--level systems in the Josephson junction tunnel barrier of thickness can modify the potential energy of the ba…
Volatility, Persistence, and Survival in Financial Markets
M. Constantin, S. Das Sarma
We study the temporal fluctuations in time-dependent stock prices (both individual and composite) as a stochastic phenomenon using general techniques and methods of nonequilibrium…
Sampling Time Effects for Persistence and Survival in Step Structural Fluctuations
D. B. Dougherty, C. Tao, O. Bondarchuk +5
The effects of sampling rate and total measurement time have been determined for single-point measurements of step fluctuations within the context of first-passage properties. Time…