Entropy Measurement of a Strongly Coupled Quantum Dot

被引：16

作者：

Child, Timothy ^{[1
,2
]}

Sheekey, Owen ^{[1
,2
]}

Luscher, Silvia ^{[1
,2
]}

Fallahi, Saeed ^{[3
,4
]}

Gardner, Geoffrey C. ^{[4
,5
]}

Manfra, Michael ^{[3
,4
,5
,6
]}

Mitchell, Andrew ^{[7
,8
]}

Sela, Eran ^{[9
]}

Kleeorin, Yaakov ^{[10
]}

Meir, Yigal ^{[11
,12
]}

Folk, Joshua ^{[1
,2
]}

机构：

[1] Univ British Columbia, Stewart Blusson Quantum Matter Inst, Vancouver, BC V6T 1Z4, Canada

[2] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[3] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA

[4] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA

[5] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA

[6] Purdue Univ, Elmore Family Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

[7] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland

[8] Univ Coll Dublin, Ctr Quantum Engn Sci & Technol, Dublin 4, Ireland

[9] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[10] Univ Chicago, Ctr Phys Evolving Syst, Chicago, IL 60637 USA

[11] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[12] Ben Gurion Univ Negev, Ilse Katz Inst Nanoscale Sci & Technol, IL-84105 Beer Sheva, Israel

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 22期

基金：

欧洲研究理事会; 加拿大自然科学与工程研究理事会; 加拿大创新基金会; 以色列科学基金会;

关键词：

ENTANGLEMENT;

D O I：

10.1103/PhysRevLett.129.227702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spin 1/2 entropy of electrons trapped in a quantum dot has previously been measured with great accuracy, but the protocol used for that measurement is valid only within a restrictive set of conditions. Here, we demonstrate a novel entropy measurement protocol that is universal for arbitrary mesoscopic circuits and apply this new approach to measure the entropy of a quantum dot hybridized with a reservoir. The experimental results match closely to numerical renormalization group (NRG) calculations for small and intermediate coupling. For the largest couplings investigated in this Letter, NRG calculations predict a suppression of spin entropy at the charge transition due to the formation of a Kondo singlet, but that suppression is not observed in the experiment.

引用

页数：5

共 50 条

[21] Scalable implementation of strongly coupled cavity-quantum dot devices
Dousse, A.
Suffczynski, J.
Braive, R.
Miard, A.
Lemaitre, A.
Sagnes, I.
Lanco, L.
Bloch, J.
Voisin, P.
Senellart, P.
APPLIED PHYSICS LETTERS, 2009, 94 (12)
[22] Entangled photon pairs produced by a quantum dot strongly coupled to a microcavity
Johne, R.
Gippius, N. A.
Pavlovic, G.
Solnyshkov, D. D.
Shelykh, I. A.
Malpuech, G.
PHYSICAL REVIEW LETTERS, 2008, 100 (24)
[23] Magnetic and temperature control in the emission of a quantum dot strongly coupled to a microcavity
Jimenez-Orjuela, C. A.
Vinck-Posada, H.
Villas-Boas, Jose M.
PHYSICA B-CONDENSED MATTER, 2020, 592
[24] Coulomb-blockade oscillations in a quantum dot strongly coupled to leads
Heinzel, T
Johnson, AT
Wharam, DA
Kotthaus, JP
Bohm, G
Klein, W
Trankle, G
Weimann, G
PHYSICAL REVIEW B, 1995, 52 (23) : 16638 - 16645
[25] Dipolariton Formation in Quantum Dot Molecules Strongly Coupled to Optical Resonators
Dominguez, Marlon S.
Macias-Pinilla, David F.
Ramirez, Hanz Y.
JOURNAL OF NANOMATERIALS, 2019, 2019
[26] Strain Tuning of a Quantum Dot Strongly Coupled to a Photonic Crystal Cavity
Sun, Shuo
Kim, Hyochul
Solomon, Glenn S.
Waks, Edo
2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2014,
[27] A Charge-Tunable Quantum Dot Strongly Coupled to a Nanophotonic Cavity
Luo, Zhouchen
Bracker, Allan S.
Gammon, Dan
Waks, Edo
2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2019,
[28] Strongly coupled single quantum dot in a photonic crystal waveguide cavity
Brossard, F. S. F.
Xu, X. L.
Williams, D. A.
Hadjipanayi, M.
Hugues, M.
Hopkinson, M.
Wang, X.
Taylor, R. A.
PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, 2011, 1399
[29] Strain tuning of a quantum dot strongly coupled to a photonic crystal cavity
Sun, Shuo
Kim, Hyochul
Solomon, Glenn S.
Waks, Edo
APPLIED PHYSICS LETTERS, 2013, 103 (15)
[30] Resonant Excitation of a Quantum Dot Strongly Coupled to a Photonic Crystal Nanocavity
Englund, Dirk
Majumdar, Arka
Faraon, Andrei
Toishi, Mitsuru
Stoltz, Nick
Petroff, Pierre
Vuckovic, Jelena
PHYSICAL REVIEW LETTERS, 2010, 104 (07)

← 1 2 3 4 5 →