Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Dasari, Durga"'
Refrigeration limits are of fundamental and practical importance. We here show that quantum systems can be cooled below existing incoherent cooling bounds by employing coherent virtual qubits, even if the amount of coherence is incompletely known. Vi
Externí odkaz:
http://arxiv.org/abs/2410.18201
Autor:
Peng, Ruoming, Wu, Xuntao, Wang, Yang, Zhang, Jixing, Geng, Jianpei, Dasari, Durga Bhaktavatsala Rao, Cleland, Andrew N., Wrachtrup, Jörg
Solid-state spin systems hold great promise for quantum information processing and the construction of quantum networks. However, the considerable inhomogeneity of spins in solids poses a significant challenge to the scaling of solid-state quantum sy
Externí odkaz:
http://arxiv.org/abs/2409.12938
We present a protocol for the ground-state cooling of a tripartite hybrid quantum system, in which a macroscopic oscillator acts as a mediator between a single probe spin and a remote spin ensemble. In the presence of weak dispersive coupling between
Externí odkaz:
http://arxiv.org/abs/2403.16839
Autor:
Hesselmeier, Erik, Kuna, Pierre, Takács, István, Ivády, Viktor, Knolle, Wolfgang, Ghezellou, Misagh, Ul-Hassan, Jawad, Dasari, Durga, Kaiser, Florian, Vorobyov, Vadim, Wrachtrup, Jörg
Nuclear spins with hyperfine coupling to single electron spins are highly valuable quantum bits. In this work we probe and characterise the particularly rich nuclear spin environment around single silicon vacancy color-centers (V2) in 4H-SiC. By usin
Externí odkaz:
http://arxiv.org/abs/2310.15557
Autor:
Geng, Jianpei, Shalomayeva, Tetyana, Gryzlova, Mariia, Mukherjee, Amlan, Santonocito, Santo, Dzhavadzade, Dzhavid, Dasari, Durga, Kato, Hiromitsu, Stöhr, Rainer, Denisenko, Andrej, Mizuochi, Norikazu, Wrachtrup, Jörg
Charge state instabilities have been a bottleneck for the implementation of solid-state spin systems and pose a major challenge to the development of spin-based quantum technologies. Here we investigate the stabilization of negatively charged nitroge
Externí odkaz:
http://arxiv.org/abs/2305.15160
Autor:
Parthasarathy, Shravan Kumar, Kallinger, Birgit, Kaiser, Florian, Berwian, Patrick, Dasari, Durga B. R., Friedrich, Jochen, Nagy, Roland
Publikováno v:
Phys. Rev. Applied 19, 034026 2023
A distributed quantum network would require quantum nodes capable of performing arbitrary quantum information protocols with high fidelity. So far the challenge has been in realizing such quantum nodes with features for scalable quantum computing. We
Externí odkaz:
http://arxiv.org/abs/2302.01065
Autor:
Wong, King Cho, Ng, San Lam, Ho, Kin On, Shen, Yang, Wu, Jiahao, Lai, Kwing To, Leung, Man Yin, Leung, Wai Kuen, Dasari, Durga Bhaktavatsala Rao, Denisenko, Andrej, Wrachtrup, Jörg, Yang, Sen
Publikováno v:
Phys. Rev. Appl. 18, 024044 (2022)
Single color centers in solid have emerged as promising physical platforms for quantum information science. Creating these centers with excellent quantum properties is a key foundation for further technological developments. In particular, the micros
Externí odkaz:
http://arxiv.org/abs/2208.09691
Autor:
Meinel, Jonas, Kwon, Minsik, Dasari, Durga, Sumiya, Hitoshi, Onoda, Shinobu, Isoya, Junichi, Vorobyov, Vadim, Wrachtrup, Jörg
Nanoscale nuclear magnetic resonance (NMR) signals can be measured through hyperfine interaction to paramagnetic electron sensor spins. A heterodyne approach is widely used to overcome the electron spin lifetime limit in spectral resolution. It uses
Externí odkaz:
http://arxiv.org/abs/2205.10182
Autor:
Zhang, Chen, Dasari, Durga, Widmann, Matthias, Meinel, Jonas, Vorobyov, Vadim, Kapitanova, Polina, Nenasheva, Elizaveta, Nakamura, Kazuo, Sumiya, Hitoshi, Onoda, Shinobu, Isoya, Junichi, Wrachtrup, Jörg
Quantum sensors are keeping the cutting-edge sensitivities in metrology. However, for high-sensitive measurements of arbitrary signals, limitations in linear dynamic range could introduce distortions when sensing the frequency, magnitude and phase of
Externí odkaz:
http://arxiv.org/abs/2111.04100
We investigate, theoretically and experimentally, the thermodynamic performance of a minimal three-qubit heat-bath algorithmic cooling refrigerator. We analytically compute the coefficient of performance, the cooling power and the polarization of the
Externí odkaz:
http://arxiv.org/abs/2109.14056