Details
| Original language | English |
|---|---|
| Article number | 260601 |
| Number of pages | 7 |
| Journal | Physical review letters |
| Volume | 131 |
| Issue number | 26 |
| Publication status | Published - 26 Dec 2023 |
Abstract
The high-fidelity analysis of many-body quantum states of indistinguishable atoms requires the accurate counting of atoms. Here we report the tomographic reconstruction of an atom-number-resolving detector. The tomography is performed with an ultracold rubidium ensemble that is prepared in a coherent spin state by driving a Rabi coupling between the two hyperfine clock levels. The coupling is followed by counting the occupation number in one level. We characterize the fidelity of our detector and show that a negative-valued Wigner function is associated with it. Our results offer an exciting perspective for the high-fidelity reconstruction of entangled states and can be applied for a future demonstration of Heisenberg-limited atom interferometry.
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In: Physical review letters, Vol. 131, No. 26, 260601, 26.12.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tomography of a Number-Resolving Detector by Reconstruction of an Atomic Many-Body Quantum State
AU - Hetzel, Mareike
AU - Pezzè, Luca
AU - Pür, Cebrail
AU - Quensen, Martin
AU - Hüper, Andreas
AU - Geng, Jiao
AU - Kruse, Jens
AU - Santos, Luis
AU - Ertmer, Wolfgang
AU - Smerzi, Augusto
AU - Klempt, Carsten
N1 - Funding Information: This work is supported by the QuantERA grants SQUEIS and MENTA. We acknowledge financial support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), Project ID 274200144-SFB 1227 DQ-mat within the project B01 and Germany’s Excellence Strategy, EXC-2123 QuantumFrontiers, Project-ID 390837967. M. Q. acknowledges support from the Hannover School for Nanotechnology (HSN).
PY - 2023/12/26
Y1 - 2023/12/26
N2 - The high-fidelity analysis of many-body quantum states of indistinguishable atoms requires the accurate counting of atoms. Here we report the tomographic reconstruction of an atom-number-resolving detector. The tomography is performed with an ultracold rubidium ensemble that is prepared in a coherent spin state by driving a Rabi coupling between the two hyperfine clock levels. The coupling is followed by counting the occupation number in one level. We characterize the fidelity of our detector and show that a negative-valued Wigner function is associated with it. Our results offer an exciting perspective for the high-fidelity reconstruction of entangled states and can be applied for a future demonstration of Heisenberg-limited atom interferometry.
AB - The high-fidelity analysis of many-body quantum states of indistinguishable atoms requires the accurate counting of atoms. Here we report the tomographic reconstruction of an atom-number-resolving detector. The tomography is performed with an ultracold rubidium ensemble that is prepared in a coherent spin state by driving a Rabi coupling between the two hyperfine clock levels. The coupling is followed by counting the occupation number in one level. We characterize the fidelity of our detector and show that a negative-valued Wigner function is associated with it. Our results offer an exciting perspective for the high-fidelity reconstruction of entangled states and can be applied for a future demonstration of Heisenberg-limited atom interferometry.
UR - http://www.scopus.com/inward/record.url?scp=85181397348&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2207.01270
DO - 10.48550/arXiv.2207.01270
M3 - Article
AN - SCOPUS:85181397348
VL - 131
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 26
M1 - 260601
ER -