Quantum Information with Solid-State Devices VO 141.A55 SS2016 - - PowerPoint PPT Presentation

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Quantum Information with Solid-State Devices VO 141.A55 SS2016 - - PowerPoint PPT Presentation

Jan 12, 2024 252 likes •472 views

Quantum Information with Solid-State Devices VO 141.A55 SS2016 Dr. Johannes Majer Lecture 9 RF-SQUID RF-SQUID Fluxonium Phase Qubit Phase Qubit persistent-current qubit f=0 =0.8 8 1 6 0.5 4 0 2 0.5 2 0 1

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SLIDE 1

Quantum Information with Solid-State Devices

VO 141.A55 SS2016

  • Dr. Johannes Majer

Lecture 9

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SLIDE 2

RF-SQUID

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SLIDE 3

RF-SQUID

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SLIDE 4

Fluxonium

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SLIDE 5

Phase Qubit

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SLIDE 6

Phase Qubit

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SLIDE 7

persistent-current qubit

φ1 φ2 f=0 α=0.8 −8 −6 −4 −2 2 4 6 8 −8 −6 −4 −2 2 4 6 8 −2.5 −2 −1.5 −1 −0.5 0.5 1

f=0

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SLIDE 8

persistent-current qubit

φ1 φ2 f=0.5 α=0.8 −8 −6 −4 −2 2 4 6 8 −8 −6 −4 −2 2 4 6 8 −1 −0.5 0.5 1 1.5 2 2.5

f=0.5

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SLIDE 9

persistent-current qubit

−4 −3 −2 −1 1 2 3 4 −2 −1.5 −1 −0.5 0.5 1 1.5 2 2.5 3 φ1=−φ2 Energy (EJ) α=0.8 f=0.5 f=0.55 f=0.45

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SLIDE 10

persistent-current qubit

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SLIDE 11

persistent-current qubit

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SLIDE 12

persistent-current qubit

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SLIDE 13

persistent-current qubit

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SLIDE 14

persistent-current qubit

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SLIDE 15

persistent-current qubit

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SLIDE 16

persistent-current qubit

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SLIDE 17

persistent-current qubit

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SLIDE 18

persistent-current qubit

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SLIDE 19

persistent-current qubit

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SLIDE 20

persistent-current qubit