Zobrazeno 1 - 9
of 9
pro vyhledávání: '"D. S. Crankshaw"'
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 15:872-875
Monolithic integration of control electronics with superconducting qubits will facilitate scalability of a superconducting quantum computer by reducing the room temperature electronics necessary for performing quantum state manipulation. We report th
Autor:
D. S. Crankshaw, S. O. Valenzuela, Nina Markovic, J. Lee, D. Nakada, Michael Tinkham, Kenneth Segall, Terry P. Orlando, Karl K. Berggren, Bhuwan Singh
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 13:1009-1012
We present experiments to characterize a Nb persistent-current qubit as a two-state system. The magnetization signal from the qubit is read-out by a DC-SQUID with near single-shot efficiency. Experiments varying SQUID ramp-rate and temperature sugges
Autor:
D. S. Crankshaw, Xingxiang Zhou, Mark F. Bocko, Jonathan L. Habif, Marc J. Feldman, Terry P. Orlando
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 13:966-969
We design an RSFQ oscillator with a variable duty cycle to drive a superconductive qubit. This design has been optimized to minimize the decoherence when coupled to the superconductive persistent current qubit. A continuous RSFQ ring oscillator reads
Autor:
Karl K. Berggren, William D. Oliver, J. Lee, D. S. Crankshaw, Terry P. Orlando, D. Nakada, Bhuwan Singh, Yang Yu
Publikováno v:
Physical Review Letters. 92
We measured the intrawell energy relaxation time \tau_{d} between macroscopic quantum levels in the double well potential of a Nb persistent-current qubit. Interwell population transitions were generated by irradiating the qubit with microwaves. Zero
Autor:
Terry P. Orlando, Nina Markovic, Kenneth Segall, Michael Tinkham, Karl K. Berggren, Leonid Levitov, D. S. Crankshaw, D. Nakada, S. O. Valenzuela, Seth Lloyd
Publikováno v:
Physical Review B. 67
Measurements of thermal activation are made in a superconducting, niobium Persistent-Current (PC) qubit structure, which has two stable classical states of equal and opposite circulating current. The magnetization signal is read out by ramping the bi
Autor:
Terry P. Orlando, Kenneth Segall, Michael Tinkham, Nina Markovic, D. S. Crankshaw, Karl K. Berggren, Leonid Levitov, Seth Lloyd, D. Nakada, S. O. Valenzuela
DC measurements are made in a superconducting, persistent current qubit structure with a time-ordered meter. The persistent-current qubit has a double-well potential, with the two minima corresponding to magnetization states of opposite sign. Macrosc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44213286e9b2364385c3f2f005df9279
Superconductive quantum circuits (SQCs) comprise quantized energy levels that may be coupled via microwave electromagnetic fields. Described in this way, one may draw a close analogy to atoms with internal (electronic) levels coupled by laser light f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2597ac382c587f53b99eae6834e88b2
Autor:
Frank K. Wilhelm, C.H. van der Wal, D. S. Crankshaw, J. E. Mooij, Terry P. Orlando, Seth Lloyd, Lin Tian
Publikováno v:
Physica C: Superconductivity, 368(1). ELSEVIER SCIENCE BV
The SQUID used to measure the flux state of a superconducting flux-based qubit interacts with the qubit and transmits its environmental noise to the qubit, thus causing the relaxation and dephasing of the qubit state. The SQUID–qubit system is anal
Autor:
Terry P. Orlando, D. S. Crankshaw
Publikováno v:
Optical Fiber Communication Conference and International Conference on Quantum Information.
We present an on-chip oscillator designed to drive the persistent current qubit. A DC SQUID which delivers an oscillating flux of 0.001Φ0 in a frequency range from 5 to 15 GHz has been engineered to minimize its decoherence effects on the qubit. Mul