Surface-electrode ion trap with integrated light source Tony Hyun Kim Chuang group 2011 April 5.

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Presentation transcript:

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] D. Kielpinski, C. Monroe, D.J. Wineland. Nature 6890, (2002) [2] A. VanDevender, Y. Colombe, J. Amini, D. Leibfried, D.J. Wineland. PRL 105, (2010) [3] E. Streed, B.G. Norton, A. Jechow, T.J. Weinhold, D. Kielpinski. PRL 106, (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: (2011) [1][2] [4] [3] [5]

Optics integration in ion traps QIP with 10s and 100s of qubits Quantum light-matter interface (cQED) [1] D. Kielpinski, C. Monroe, D.J. Wineland. Nature 6890, (2002) [2] A. VanDevender, Y. Colombe, J. Amini, D. Leibfried, D.J. Wineland. PRL 105, (2010) [3] E. Streed, B.G. Norton, A. Jechow, T.J. Weinhold, D. Kielpinski. PRL 106, (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: (2011) [1][2] [4] [3] [5] Challenges: 1. Perturbation of trapping fields, 2. Dielectric charging [6], 3. Overlap of ion and mode. [6] M. Harlander, M. Brownnutt, W. Hansel, R. Blatt. NJP 12, (2010)

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

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, (2010)

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, (2010)

Cryogenic experiment Fiber Sr oven 2x RF 4x RF 40K 8K „Conventional“ beam delivery

Results 1.Stable trapping and ion-fiber interaction 2.Fiber-induced charging dynamics 3.Measured fiber mode using ion as a probe (1) T.H. Kim, P.F. Herskind, I.L. Chuang. arXiv: (2011) (3) (2) ~5s discharge rate ~100mV

Summary 1.Demonstration of integrated (SM) fiber-trap: – No dramatic charge buildup during trap operation 2.Quantified fiber-induced stray fields: – Large (10~100mV) but slow (seconds) 3.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: (2011)