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RIS citation export for WEPLM21: High-Quality Resonators for Quantum Information Systems

AU  - Kuzikov, S.V.
AU  - Antipov, S.P.
AU  - Avrakhov, P.V.
AU  - Gomez, E.
ED  - Yamazaki, Yoshishige
ED  - Raubenheimer, Tor
ED  - McCausey, Amy
ED  - Schaa, Volker RW
TI  - High-Quality Resonators for Quantum Information Systems
J2  - Proc. of NAPAC2019, Lansing, MI, USA, 01-06 September 2019
CY  - Lansing, MI, USA
T2  - North American Particle Accelerator Conference
T3  - 4
LA  - english
AB  - We analyze ultra-high-quality factor resonators for quantum computer architectures. As qubit operation requires external DC fields, we started our study with a conventional closed copper cavity which naturally allows external magnetic field. In order to increase quality factor and to keep DC magnetic field control at a level less than critical field, an open SRF resonator promises much higher quality. The next step resonator is a photonic band gap (PBG) resonator. This resonator allows easy external either magnetic or electric field control. It consists of a periodic 3D set of sapphire rods assembled between two superconducting plates. The PBG resonator exploits unique properties of the crystalline sapphire. Tangent delta for sapphire in X-band is reported at 10⁻⁹ ’ 10-10 at 4 K. That is why, the Q-factor of the sapphire PBG resonator can be expected as high as 10 billions at mK temperatures which provides long relaxation times (dephasing etc.). The established PBG design implies obtaining a large Purcell factor, i.e. large ratio of quality to mode volume which is important parameter to establish strong interaction of a qubit with the cavity mode rather than RF noise.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 690
EP  - 693
KW  - cavity
KW  - controls
KW  - cryogenics
KW  - photon
DA  - 2019/10
PY  - 2019
SN  - 2673-7000
SN  - 978-3-95450-223-3
DO  - doi:10.18429/JACoW-NAPAC2019-WEPLM21
UR  - http://jacow.org/napac2019/papers/weplm21.pdf
ER  -