Optical clock with ultracold neutral atoms

被引：123

作者：

Wilpers, G ^{[1
]}

Binnewies, T ^{[1
]}

Degenhardt, C ^{[1
]}

Sterr, U ^{[1
]}

Helmcke, J ^{[1
]}

Riehle, F ^{[1
]}

机构：

[1] Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.89.230801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate how to realize an optical clock with neutral atoms that is competitive to the currently best single ion optical clocks in accuracy and superior in stability. Using ultracold atoms in a Ca optical frequency standard, we show how to reduce the relative uncertainty to below 10(-15). We observed atom interferences for stabilization of the laser to the clock transition with a visibility of 0.36, which is 70% of the ultimate limit achievable with atoms at rest. A novel scheme was applied to detect these atom interferences with the prospect to reach the quantum projection noise limit at an exceptional low instability of 4x10(-17) in 1 s.

引用

页码：1 / 230801

页数：4

共 22 条

[1] Doppler cooling and trapping on forbidden transitions -: art. no. 123002 [J].

Binnewies, T ;

Wilpers, G ;

Sterr, U ;

Riehle, F ;

Helmcke, J ;

Mehlstäubler, TE ;

Rasel, EM ;

Ertmer, W .

PHYSICAL REVIEW LETTERS, 2001, 87 (12)

[2] OPTICAL RAMSEY FRINGES WITH TRAVELING WAVES [J].

BORDE, CJ ;

SALOMON, C ;

AVRILLIER, S ;

VANLERBERGHE, A ;

BREANT, C ;

BASSI, D ;

SCOLES, G .

PHYSICAL REVIEW A, 1984, 30 (04) :1836-1848

[3] ATOMIC INTERFEROMETRY WITH INTERNAL STATE LABELING [J].

BORDE, CJ .

PHYSICS LETTERS A, 1989, 140 (1-2) :10-12

[4]

Clairon A., 1996, Proceedings of the Fifth Symposium on Frequency Standards and Metrology, P49

[5] An optical clock based on a single trapped 199Hg+ ion [J].

Diddams, SA ;

Udem, T ;

Bergquist, JC ;

Curtis, EA ;

Drullinger, RE ;

Hollberg, L ;

Itano, WM ;

Lee, WD ;

Oates, CW ;

Vogel, KR ;

Wineland, DJ .

SCIENCE, 2001, 293 (5531) :825-828

[6] Optical clockworks and the measurement of laser frequencies with a mode-locked frequency comb [J].

Holzwarth, R ;

Zimmermann, M ;

Udem, T ;

Hänsch, TW .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 2001, 37 (12) :1493-1501

[7] QUANTUM PROJECTION NOISE - POPULATION FLUCTUATIONS IN 2-LEVEL SYSTEMS [J].

ITANO, WM ;

BERGQUIST, JC ;

BOLLINGER, JJ ;

GILLIGAN, JM ;

HEINZEN, DJ ;

MOORE, FL ;

RAIZEN, MG ;

WINELAND, DJ .

PHYSICAL REVIEW A, 1993, 47 (05) :3554-3570

[8]

Jefferts SR, 2002, FREQUENCY STANDARDS, P72, DOI 10.1142/9789812777713_0010

[9] SHELVED OPTICAL ELECTRON AMPLIFIER - OBSERVATION OF QUANTUM JUMPS [J].

NAGOURNEY, W ;

SANDBERG, J ;

DEHMELT, H .

PHYSICAL REVIEW LETTERS, 1986, 56 (26) :2797-2799

[10] Measurement of the hydrogen 1S-2S transition frequency by phase coherent comparison with a microwave cesium fountain clock [J].

Niering, M ;

Holzwarth, R ;

Reichert, J ;

Pokasov, P ;

Udem, T ;

Weitz, M ;

Hänsch, TW ;

Lemonde, P ;

Santarelli, G ;

Abgrall, M ;

Laurent, P ;

Salomon, C ;

Clairon, A .

PHYSICAL REVIEW LETTERS, 2000, 84 (24) :5496-5499

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