Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Betzholz, Ralf"'
Publikováno v:
Phys. Rev. Appl. 22, 024032 (2024)
Ion-ion coupling over long distances represents a highly useful resource for quantum technologies, for example, to sympathetically cool or interconnect qubits in ion-based quantum-computing architectures. In this respect, the recently demonstrated wi
Externí odkaz:
http://arxiv.org/abs/2407.20056
Autor:
Gong, Musang, Yu, Min, Chu, Yaoming, Chen, Wei, Cao, Qingyun, Wang, Ning, Cai, Jianming, Betzholz, Ralf, Giannelli, Luigi
Publikováno v:
Physical Review A 109, 032626 (2024)
Reaching a given target quantum state with high fidelity and fast operation speed close to the quantum limit represents an important goal in quantum information science. Here, we experimentally demonstrate superadiabatic quantum driving to achieve po
Externí odkaz:
http://arxiv.org/abs/2307.01675
Autor:
Jäger, Simon B., Betzholz, Ralf
Publikováno v:
Phys. Rev. A 108, 013110 (2023)
Recently, an effective Lindblad master equation for quantum systems whose dynamics are coupled to dissipative bosonic modes has been introduced [Phys. Rev. Lett. 129, 063601 (2022)]. In this approach, the bosonic modes are adiabatically eliminated an
Externí odkaz:
http://arxiv.org/abs/2305.03183
Publikováno v:
Phys. Rev. Lett. 132, 073202 (2024)
The electric dipole moment (EDM) plays a crucial role in determining the interaction strength of an atom with electric fields, making it paramount to quantum technologies based on coherent atomic control. We propose a scheme for engineering the poten
Externí odkaz:
http://arxiv.org/abs/2304.10735
Autor:
Gong, Musang, Yu, Min, Betzholz, Ralf, Chu, Yaoming, Yang, Pengcheng, Wang, Zhenyu, Cai, Jianming
In a solid-state spin system, we experimentally demonstrate a protocol for quantum-state population transfer with an improved efficiency compared to traditional stimulated Raman adiabatic passage (STIRAP). Using the ground-state triplet of the nitrog
Externí odkaz:
http://arxiv.org/abs/2304.10672
Publikováno v:
Phys. Rev. Applied 18, 024040 (2022)
Quantum sensing is considered to be one of the most promising subfields of quantum information to deliver practical quantum advantages in real-world applications. However, its impressive capabilities, including high sensitivity, are often hindered by
Externí odkaz:
http://arxiv.org/abs/2302.08236
Autor:
Wang, Jingcheng, Zhang, Shaoliang, Cai, Jianming, Liao, Zhenyu, Arenz, Christian, Betzholz, Ralf
Publikováno v:
Phys. Rev. A 108, 022408 (2023)
In a recently demonstrated quantum-state tomography scheme [Phys. Rev. Lett. 124, 010405 (2020)], a random control field is locally applied to a multipartite system to reconstruct the full quantum state of the system through single-observable measure
Externí odkaz:
http://arxiv.org/abs/2302.07439
Publikováno v:
Phys. Rev. Lett. 129, 063601 (2022)
We present a general approach to derive Lindblad master equations for a subsystem whose dynamics is coupled to dissipative bosonic modes. The derivation relies on a Schrieffer-Wolff transformation which allows to eliminate the bosonic degrees of free
Externí odkaz:
http://arxiv.org/abs/2203.03302
Publikováno v:
Phys. Rev. A 104, 012421 (2021)
We present a method for the direct measurement of the Wigner characteristic function of a thermalizing harmonic oscillator that is completely inaccessible for control or measurement. The strategy employs a recently proposed probe-measurement-based sc
Externí odkaz:
http://arxiv.org/abs/2103.00877
Autor:
Tian, Jiazhao, Liu, Haibin, Liu, Yu, Yang, Pengcheng, Betzholz, Ralf, Said, Ressa S., Jelezko, Fedor, Cai, Jianming
Publikováno v:
Phys. Rev. A 102, 043707 (2020)
Quantum optimal control represents a powerful technique to enhance the performance of quantum experiments by engineering the controllable parameters of the Hamiltonian. However, the computational overhead for the necessary optimization of these contr
Externí odkaz:
http://arxiv.org/abs/2009.10275