Zobrazeno 1 - 10
of 4 772
pro vyhledávání: '"Tong, D."'
Autor:
Yu, Xiao-Dong, Tong, D. M.
Publikováno v:
Phys. Rev. Lett. 131, 200202 (2023)
The geometric phase is a fundamental quantity characterizing the holonomic feature of quantum systems. It is well known that the evolution operator of a quantum system undergoing a cyclic evolution can be simply written as the product of holonomic an
Externí odkaz:
http://arxiv.org/abs/2311.09597
Autor:
Zhao, P. Z., Tong, D. M.
Publikováno v:
Phys. Rev. A 108, 012619 (2023)
Nonadiabatic holonomic quantum computation has received increasing attention due to the merits of both robustness against control errors and high-speed implementation. A crucial step in realizing nonadiabatic holonomic quantum computation is to remov
Externí odkaz:
http://arxiv.org/abs/2308.06674
Autor:
Zhang, Da-Jian, Tong, D. M.
Publikováno v:
Phys. Rev. Lett. 133, 040202 (2024)
Learning physical properties of high-dimensional states is crucial for developing quantum technologies but usually consumes an exceedingly large number of samples which are difficult to afford in practice. In this Letter, we use the methodology of qu
Externí odkaz:
http://arxiv.org/abs/2301.10982
Autor:
Zhang, Da-Jian, Tong, D. M.
Publikováno v:
npj Quant. Inf. 8, 81 (2022)
It is a major goal in quantum thermometry to reach a $1/N$ scaling of thermometric precision known as Heisenberg scaling but is still in its infancy to date. The main obstacle is that the resources typically required are highly entangled states, whic
Externí odkaz:
http://arxiv.org/abs/2207.03808
Publikováno v:
Phys. Rev. A 104, 012418 (2021)
The past two decades have witnessed a surge of interest in borrowing tools from quantum information theory to investigate quantum phase transitions (QPTs). The best known examples are entanglement measures whose nonanalyticities at critical points we
Externí odkaz:
http://arxiv.org/abs/2107.09839
Publikováno v:
Phys. Rev. A 103, 052605 (2021)
Nonadiabatic holonomic quantum computation (NHQC) provides a method to implement error resilient gates and that has attracted considerable attention recently. Since it was proposed, three-level {\Lambda} systems have become the typical building block
Externí odkaz:
http://arxiv.org/abs/2102.00603
Publikováno v:
Phys. Rev. A 103, 012205 (2021)
The main obstacles to the realization of high-fidelity quantum gates are the control errors arising from inaccurate manipulation of a quantum system and the decoherence caused by the interaction between the quantum system and its environment. Nonadia
Externí odkaz:
http://arxiv.org/abs/2101.05492
It has been asked by different authors whether the two classes of Schatten-$p$-norm-based functionals $C_p(\rho)=\min_{\sigma\in\mathcal{I}}||\rho-\sigma||_p$ and $ \tilde{C}_p(\rho)= \|\rho-\Delta\rho\|_{p}$ with $p\geq 1$ are valid coherence measur
Externí odkaz:
http://arxiv.org/abs/2009.05895
The main challenges in achieving high-fidelity quantum gates are to reduce the influence of control errors caused by imperfect Hamiltonians and the influence of decoherence caused by environment noise. To overcome control errors, a promising proposal
Externí odkaz:
http://arxiv.org/abs/2006.16708
Publikováno v:
Phys. Rev. Research 2, 023295 (2020)
Nonadiabatic geometric phases are only dependent on the evolution path of a quantum system but independent of the evolution details, and therefore quantum computation based on nonadiabatic geometric phases is robust against control errors. To realize
Externí odkaz:
http://arxiv.org/abs/2006.03837