Zobrazeno 1 - 10
of 380
pro vyhledávání: '"Zajac D"'
Autor:
Zajac, D. M., Stehlik, J., Underwood, D. L., Phung, T., Blair, J., Carnevale, S., Klaus, D., Keefe, G. A., Carniol, A., Kumph, M., Steffen, Matthias, Dial, O. E.
The addition of tunable couplers to superconducting quantum architectures offers significant advantages for scaling compared to fixed coupling approaches. In principle, tunable couplers allow for exact cancellation of qubit-qubit coupling through the
Externí odkaz:
http://arxiv.org/abs/2108.11221
Autor:
Stehlik, J., Zajac, D. M., Underwood, D. L., Phung, T., Blair, J., Carnevale, S., Klaus, D., Keefe, G. A., Carniol, A., Kumph, M., Steffen, Matthias, Dial, O. E.
Publikováno v:
Phys. Rev. Lett. 127, 080505 (2021)
Implementation of high-fidelity two-qubit operations is a key ingredient for scalable quantum error correction. In superconducting qubit architectures tunable buses have been explored as a means to higher fidelity gates. However, these buses introduc
Externí odkaz:
http://arxiv.org/abs/2101.07746
Publikováno v:
Phys. Rev. Applied 11, 061006 (2019)
Silicon spin qubits are a promising quantum computing platform offering long coherence times, small device sizes, and compatibility with industry-backed device fabrication techniques. In recent years, high fidelity single-qubit and two-qubit operatio
Externí odkaz:
http://arxiv.org/abs/1903.05952
Publikováno v:
Phys. Rev. Applied 11, 044063 (2019)
Strong magnetic field gradients can produce a synthetic spin-orbit interaction that allows for high fidelity electrical control of single electron spins. We investigate how a field gradient impacts the spin relaxation time T_1 by measuring T_1 as a f
Externí odkaz:
http://arxiv.org/abs/1811.00848
Publikováno v:
Nat Commun. 10, 1063 (2019)
Significant advances have been made towards fault-tolerant operation of silicon spin qubits, with single qubit fidelities exceeding 99.9%, several demonstrations of two-qubit gates based on exchange coupling, and the achievement of coherent single sp
Externí odkaz:
http://arxiv.org/abs/1809.03976
Autor:
Russ, Maximilian, Zajac, D. M., Sigillito, A. J., Borjans, F., Taylor, J. M., Petta, J. R., Burkard, Guido
Publikováno v:
Phys. Rev. B 97, 085421 (2018)
Motivated by recent experiments of Zajac et al. [arXiv:1708.03530], we theoretically describe high-fidelity two-qubit gates using the exchange interaction between the spins in neighboring quantum dots subject to a magnetic field gradient. We use a co
Externí odkaz:
http://arxiv.org/abs/1711.00754
Publikováno v:
Nature 555, 599 (2018)
Electron spins in silicon quantum dots are attractive systems for quantum computing due to their long coherence times and the promise of rapid scaling using semiconductor fabrication techniques. While nearest neighbor exchange coupling of two spins h
Externí odkaz:
http://arxiv.org/abs/1710.03265
Autor:
Zajac, D. M., Sigillito, A. J., Russ, M., Borjans, F., Taylor, J. M., Burkard, G., Petta, J. R.
Publikováno v:
Science 359, 439 (2018)
Single qubit rotations and two-qubit CNOT operations are crucial ingredients for universal quantum computing. While high fidelity single qubit operations have been achieved using the electron spin degree of freedom, realizing a robust CNOT gate has b
Externí odkaz:
http://arxiv.org/abs/1708.03530
Publikováno v:
Science 355, 156 (2017)
Silicon is vital to the computing industry due to the high quality of its native oxide and well-established doping technologies. Isotopic purification has enabled quantum coherence times on the order of seconds, thereby placing silicon at the forefro
Externí odkaz:
http://arxiv.org/abs/1703.03047
Publikováno v:
Appl. Phys. Lett. 110, 043502 (2017)
We demonstrate a hybrid device architecture where the charge states in a double quantum dot (DQD) formed in a Si/SiGe heterostructure are read out using an on-chip superconducting microwave cavity. A quality factor Q = 5,400 is achieved by selectivel
Externí odkaz:
http://arxiv.org/abs/1610.05571