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Surface-electrode ion trap with integrated light source. Tony Hyun Kim Chuang group 2011 April 5. Optics integration in ion traps. QIP with 10s and 100s of qubits Quantum light-matter interface (cQED). [1]. [2]. [3].

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optics integration in ion traps
Optics integration in ion traps
  • QIP with 10s and 100s of qubits
  • Quantum light-matter interface (cQED)

[1]

[2]

[3]

[1] D. Kielpinski, C. Monroe, D.J. Wineland. Nature 6890, 709-771 (2002)

[2] A. VanDevender, Y. Colombe, J. Amini, D. Leibfried, D.J. Wineland. PRL 105, 023001 (2010)

[3] E. Streed, B.G. Norton, A. Jechow, T.J. Weinhold, D. Kielpinski. PRL 106, 010502 (2011)

[4] P.F. Herskind, S.X. Wang, M. Shi, Y. Ge, M. Cetina, I.L. Chuang. arXiv: 1011:5259 (2010)

[5] A. Wilson, et al. arXiv: 1101.5877 (2011)

[4]

[5]

optics integration in ion traps1
Optics integration in ion traps
  • QIP with 10s and 100s of qubits
  • Quantum light-matter interface (cQED)

[1]

[2]

[3]

Challenges:

Perturbation of trapping fields,

Dielectric charging [6],

Overlap of ion and mode.

[1] D. Kielpinski, C. Monroe, D.J. Wineland. Nature 6890, 709-771 (2002)

[2] A. VanDevender, Y. Colombe, J. Amini, D. Leibfried, D.J. Wineland. PRL 105, 023001 (2010)

[3] E. Streed, B.G. Norton, A. Jechow, T.J. Weinhold, D. Kielpinski. PRL 106, 010502 (2011)

[4] P.F. Herskind, S.X. Wang, M. Shi, Y. Ge, M. Cetina, I.L. Chuang. arXiv: 1011:5259 (2010)

[5] A. Wilson, et al. arXiv: 1101.5877 (2011)

[4]

[5]

[6] M. Harlander, M. Brownnutt, W. Hansel, R. Blatt. NJP 12, 093035 (2010)

fiber integration for light delivery
Fiber integration for light delivery
  • Single-mode for 674nm (and 422nm)
  • Mode waist at ion of ~50 micron

~50 micron waist

GND

RF

674nm SM fiber

GND

trap design and fabrication
Trap design and fabrication
  • Ion translation by multiple RF sources [7]
  • Coarse alignment under microscope

RF1

RF2

[7] T.H. Kim, P.F. Herskind, T. Kim, J. Kim, I.L. Chuang. PRA 82, 043412 (2010)

trap design and fabrication1
Trap design and fabrication
  • Ion translation by multiple RF sources [7]
  • Coarse alignment under microscope

RF1

RF2

[7] T.H. Kim, P.F. Herskind, T. Kim, J. Kim, I.L. Chuang. PRA 82, 043412 (2010)

cryogenic experiment
Cryogenic experiment

4x RF

„Conventional“ beam delivery

8K

Fiber

2x RF

40K

Sr oven

results
Results
  • Stable trapping and ion-fiber interaction
  • Fiber-induced charging dynamics
  • Measured fiber mode using ion as a probe

(1)

(3)

(2)

~100mV

~5s discharge rate

T.H. Kim, P.F. Herskind, I.L. Chuang. arXiv:1103.5256 (2011)

summary
Summary
  • Demonstration of integrated (SM) fiber-trap:
    • No dramatic charge buildup during trap operation
  • Quantified fiber-induced stray fields:
    • Large (10~100mV) but slow (seconds)
  • Micromotion-free RF translation of ion:
    • Significant range; tuned to mode ~150um away
    • General technique for tuning ion-mode overlap, use of ion as sensor

T.H. Kim, P.F. Herskind, I.L. Chuang. arXiv:1103.5256 (2011)