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CATEGORIES:Lectures / Seminars / Speakers
DESCRIPTION:Towards Quantum Computing with Blochnium Qubit\n\nAbstract: The
non-dissipative non-linearity of the Josephson effect enables the design o
f artificial atoms with macroscopic superconducting circuits. These artific
ial atoms are among the leading qubit platforms for quantum computations. T
here exist three fundamental types of superconducting qubits that are chara
cterized by the distinct quantum dynamics of the Cooper pair condensate: si
ngle charge tunneling (in charge qubits)\, single flux tunneling (in flux q
ubits)\, and phase oscillations (in phase and transmon qubits). In the talk
\, I will introduce the missing qubit type that exploits the insulating sta
te of a Josephson junction in the complementary regime of quasicharge oscil
lations. To enter this regime\, a weak Josephson junction must be shunted w
ith an exceptionally high-value inductance to enhance phase fluctuations. H
owever\, as the inductance of any real-world inductor increases\, so does t
he parasitic capacitance due to the spatial extension of the inductor. The
distributed nature of parasitic capacitance leads to an ultrastrong couplin
g of the parasitic modes to the qubit degree of freedom. Nevertheless\, the
adverse effects of the parasitic modes can be mitigated by releasing the q
ubit circuit off the substrate. In the suspended qubit circuit\, the insula
ting state reveals itself as the vanishing flux-sensitivity of the qubit tr
ansition between the ground and the first excited states. I will conclude t
he talk with a discussion of possible applications.
DTEND:20200116T220000Z
DTSTAMP:20200329T092726Z
DTSTART:20200116T210000Z
GEO:34.676819;-82.835167
LOCATION:Kinard Laboratory of Physics\, G01 Kinard Lab
SEQUENCE:0
SUMMARY:Physics & Astronomy Colloquium
UID:tag:localist.com\,2008:EventInstance_32326623660064
URL:https://calendar.clemson.edu/event/physics_astronomy_colloquium_5185
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