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Parametric control of a superconducting flux qubit
S. Saito, T. Meno, M. Ueda +3
Parametric control of a superconducting flux qubit has been achieved by using two-frequency microwave pulses. We have observed Rabi oscillations stemming from parametric transition…
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…
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…