Measurement-based ground-state cooling of a trapped-ion oscillator

被引：2

作者：

Lee, Chungsun ^{[1
]}

Webster, Simon C. ^{[1
]}

Toba, Jacopo Mosca ^{[1
]}

Corfield, Ollie ^{[1
]}

Porter, George ^{[1
]}

Thompson, Richard C. ^{[1
]}

机构：

[1] Imperial Coll London, Blackett Lab, London SW7 2AZ, England

来源：

PHYSICAL REVIEW A | 2023年 / 107卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

QUANTUM; MANIPULATION;

D O I：

10.1103/PhysRevA.107.033107

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Measurement-based cooling is a method by which a quantum system, initially in a thermal state, can be prepared probabilistically in its ground state through some sort of measurement. This is done by making a measurement that heralds the system being in the desired state. Here we demonstrate the application of a measurement-based cooling technique to a trapped atomic ion. The ion is precooled by Doppler laser cooling to a thermal state with a mean excitation of n approximate to 18 and the measurement-based cooling technique selects those occasions when the ion happens to be in the motional ground state. The fidelity of the heralding process is greater than 95%. This technique could be applied to other systems that are not as amenable to laser cooling as trapped ions.

引用

页数：7

共 31 条

[1]

Allen L., 1987, INTERSCIENCE MONOGRA, V28

[2]

[Anonymous], 2003, Experimental realization of quantum gates and the Deutsch-Jozsa algorithm with trapped Ions

[3]

Arcizet O, 2011, NAT PHYS, V7, P879, DOI [10.1038/nphys2070, 10.1038/NPHYS2070]

[4] Laser Radiation Pressure Slowing of a Molecular Beam [J].

Barry, J. F. ;

Shuman, E. S. ;

Norrgard, E. B. ;

DeMille, D. .

PHYSICAL REVIEW LETTERS, 2012, 108 (10)

[5] Cooling a micromechanical resonator to its ground state by measurement and feedback [J].

Bergenfeldt, Christian ;

Molmer, Klaus .

PHYSICAL REVIEW A, 2009, 80 (04)

[6] Sideband cooling of molecules in optical traps [J].

Caldwell, L. ;

Tarbutt, M. R. .

PHYSICAL REVIEW RESEARCH, 2020, 2 (01)

[7] Laser cooling of a nanomechanical oscillator into its quantum ground state [J].

Chan, Jasper ;

Mayer Alegre, T. P. ;

Safavi-Naeini, Amir H. ;

Hill, Jeff T. ;

Krause, Alex ;

Groeblacher, Simon ;

Aspelmeyer, Markus ;

Painter, Oskar .

NATURE, 2011, 478 (7367) :89-92

[8] Preparation and coherent manipulation of pure quantum states of a single molecular ion [J].

Chou, Chin-wen ;

Kurz, Christoph ;

Hume, David B. ;

Plessow, Philipp N. ;

Leibrandt, David R. ;

Leibfried, Dietrich .

NATURE, 2017, 545 (7653) :203-+

[9] Certifying Multilevel Coherence in the Motional State of a Trapped Ion [J].

Corfield, Ollie ;

Lishman, Jake ;

Lee, Chungsun ;

Toba, Jacopo Mosca ;

Porter, George ;

Heinrich, Johannes M. ;

Webster, Simon C. ;

Mintert, Florian ;

Thompson, Richard C. .

PRX QUANTUM, 2021, 2 (04)

[10] LASER COOLING TO THE ZERO-POINT ENERGY OF MOTION [J].

DIEDRICH, F ;

BERGQUIST, JC ;

ITANO, WM ;

WINELAND, DJ .

PHYSICAL REVIEW LETTERS, 1989, 62 (04) :403-406

← 1 2 3 4 →