84 citations · 138 across the 5 of their papers we have counts for
5 papers
Charged exciton emission at 1.3 m from single InAs quantum dots grown by metalorganic chemical vapor deposition
N. I. Cade, H. Gotoh, H. Kamada +4
We have studied the emission properties of self-organized InAs quantum dots (QDs) grown in an InGaAs quantum well by metalorganic chemical vapor deposition. Low-temperature photolu…
Coherent control of a flux qubit by phase-shifted resonant microwave pulses
Tatsuya Kutsuzawa, Shiro Saito, Hirotaka Tanaka +3
The quantum state of a flux qubit was successfully pulse-controlled by using a resonant microwave. We observed Ramsey fringes by applying a pair of phase-shifted pi/2 microwave pul…
Single-Shot Readout of Macroscopic Quantum Superposition State in a Superconducting Flux Qubit
Hirotaka Tanaka, Shiro Saito, Hayato Nakano +3
Single-shot readout experiments were performed on the two lowest-energy states of a superconducting qubit with three Josephson junctions embedded in a superconducting loop. We meas…
A theoretical analysis of flux-qubit measurements with a dc-SQUID
H. Nakano, H. Tanaka, S. Saito +3
The readout process of a superconducting flux-qubit is theoretically analyzed in terms of the quantum dynamics of a qubit-SQUID coupled system during measurement. The quantity dire…
Multiphoton transitions in a macroscopic quantum two-state system
S. Saito, M. Thorwart, H. Tanaka +4
We have observed multiphoton transitions between two macroscopic quantum-mechanical superposition states formed by two opposite circulating currents in a superconducting loop with…