Optical spectroscopy of GaAs in the extreme quantum limit: integer and fractional quantum Hall effect, and onset of the electron solid by Clark, R, Ford, R, Haynes, SR, Ryan, J, Turberfield, A, Wright, P, Williams, F, Deville, G, Glattli, D, Mallett, JR, van der Burgt, M, Oswald, P, Herlach, F, Foxon, C, Harris, J

“…This work has been extended to the extreme quantum limit where a photoluminescence peak develops close to Landau level filling factor v = 1 5 which correlates both with the onset of threshold behaviour in current-voltage characteristics of the two-dimensional electron system and a resonant radio-frequency absorption; the latter are quantitatively accounted for by a model of crystalline electronic structure broken up into domains. …”

OPTICAL SPECTROSCOPY OF GAAS IN THE EXTREME QUANTUM LIMIT - INTEGER AND FRACTIONAL QUANTUM HALL-EFFECT, AND ONSET OF THE ELECTRON SOLID by Clark, R, Ford, R, Haynes, S, Ryan, J, Turberfield, A, Wright, P, Williams, F, Deville, G, Glattli, D, Mallett, J, Vanderburgt, M, Oswald, P, Herlach, F, Foxon, C, Harris, J

“…This work has been extended to the extreme quantum limit where a photoluminescence peak develops close to Landau level filling factor ν = 1/5 which correlates both with the onset of threshold behaviour in current-voltage characteristics of the two-dimensional electron system and a resonant radio-frequency absorption; the latter are quantitatively accounted for by a model of crystalline electronic structure broken up into domains. …”

Author Correction: Transmon qubit readout fidelity at the threshold for quantum error correction without a quantum-limited amplifier by Liangyu Chen, Hang-Xi Li, Yong Lu, Christopher W. Warren, Christian J. Križan, Sandoko Kosen, Marcus Rommel, Shahnawaz Ahmed, Amr Osman, Janka Biznárová, Anita Fadavi Roudsari, Benjamin Lienhard, Marco Caputo, Kestutis Grigoras, Leif Grönberg, Joonas Govenius, Anton Frisk Kockum, Per Delsing, Jonas Bylander, Giovanna Tancredi

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Anisotropic Fermi Surface and Quantum Limit Transport in High Mobility Three-Dimensional Dirac Semimetal Cd_{3}As_{2} by Yanfei Zhao, Haiwen Liu, Chenglong Zhang, Huichao Wang, Junfeng Wang, Ziquan Lin, Ying Xing, Hong Lu, Jun Liu, Yong Wang, Scott M. Brombosz, Zhili Xiao, Shuang Jia, X. C. Xie, Jian Wang

“…By measuring the magnetoresistance up to 60 T, we reach the quantum limit (n=1 Landau level) at about 43 T. These results improve the knowledge of the Dirac semimetal material Cd_{3}As_{2} and also pave the way for proposing new electronic applications based on 3D Dirac materials.…”
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Signatures of a magnetic-field-induced Lifshitz transition in the ultra-quantum limit of the topological semimetal ZrTe5 by S. Galeski, H. F. Legg, R. Wawrzyńczak, T. Förster, S. Zherlitsyn, D. Gorbunov, M. Uhlarz, P. M. Lozano, Q. Li, G. D. Gu, C. Felser, J. Wosnitza, T. Meng, J. Gooth

“…The ultra-quantum limit refers to the high magnetic-field regime where electrons are confined to the lowest Landau level and is most easily reached in topological semimetals due to their low carrier density. …”
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The strongest magnetic fields in the universe: How strong can they become? by Rudolf A. Treumann, Wolfgang eBaumjohann, André eBalogh

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Multi-parameter estimation with multi-mode Ramsey interferometry by Xinwei Li, Jia-Hao Cao, Qi Liu, Meng Khoon Tey, Li You

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On the Possibility of Breaking the Heterodyne Detection Quantum Noise Limit With Cross-Correlation by Ernest A. Michael, Felipe E. Besser

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Interplay of information quantifiers and the modified Jaynes-Cummings model by Abdel-Khalek Sayed, Plastino Angelo, Obada Abdel-Shafy

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Enhanced weak force sensing based on atom-based coherent quantum noise cancellation in a hybrid cavity optomechanical system by S. K. Singh, M. Mazaheri, Jia-Xin Peng, A. Sohail, Mohammad Khalid, M. Asjad

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Correction: Poljak, M.; Matić, M. Metallization-Induced Quantum Limits of Contact Resistance in Graphene Nanoribbons with One-Dimensional Contacts.... by Mirko Poljak, Mislav Matić

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ENERGY STATES OF PARTICLES IN A QUANTUM SIZED STRUCTURE WITH A COMPLEX SHAPED BAND DIAGRAM by Alexey Pashchenko, Oleksandr Gritsunov, Oksana Babichenko

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Force sensing based on coherent quantum noise cancellation in a hybrid optomechanical cavity with squeezed-vacuum injection by Ali Motazedifard, F Bemani, M H Naderi, R Roknizadeh, D Vitali

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Optomechanics with two-phonon driving by B A Levitan, A Metelmann, A A Clerk

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THz Range Low-Noise SIS Receivers for Space and Ground-Based Radio Astronomy by Kirill I. Rudakov, Andrey V. Khudchenko, Lyudmila V. Filippenko, Maxim E. Paramonov, Ronald Hesper, Daniele Aragão Ronsó da Costa Lima, Andrey M. Baryshev, Valery P. Koshelets

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Corrigendum: Active optical clock lasing on the Cs 7S1/2-6P3/2 transition under a weak magnetic field by Tiantian Shi, Jianxiang Miao, Jia Zhang, Jingbiao Chen, Jingbiao Chen

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Active optical clock lasing on the Cs 7S1/2-6P3/2 transition under a weak magnetic field by Tiantian Shi, Jianxiang Miao, Jia Zhang, Jingbiao Chen, Jingbiao Chen

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Quantum Measurement Theory in Gravitational-Wave Detectors by Stefan L. Danilishin, Farid Ya. Khalili

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Quantum correlations between light and the kilogram-mass mirrors of LIGO

“…The measurement of minuscule forces and displacements with ever greater precision is inhibited by the Heisenberg uncertainty principle, which imposes a limit to the precision with which the position of an object can be measured continuously, known as the standard quantum limit1–4. When light is used as the probe, the standard quantum limit arises from the balance between the uncertainties of the photon radiation pressure applied to the object and of the photon number in the photoelectric detection. …”
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Anomalies in magnetoresistance of bismuth wires in high magnetic fields by Condrea, Elena

“…Anomalous peaks in the magnetoresistance of Bi wires have been observed in a high magnetic field far above the quantum limit of the electrons. By combining a magnetic field and a uniaxial strain, we have obtained a modification of the electronic structure; as a result, the quantum limit for light and heavy electrons has changed in a different way. …”
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