Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Nha, Hyunchul"'
Autor:
Tasgin, Mehmet Emre, Nha, Hyunchul
Cold atoms in optical lattice represent a quantum system of fundamental importance as they enable the study of many-body physics in a controllable way. It is thus essential to develop theoretical and experimental tools to explore quantum correlation
Externí odkaz:
http://arxiv.org/abs/2402.05477
Publikováno v:
Phys. Rev. A 107, 022423 (2023)
Homodyne measurement is a crucial tool widely used to address continuous variables for bosonic quantum systems. While an ideal homodyne detection provides a powerful analysis, e.g. to effectively measure quadrature amplitudes of light in quantum opti
Externí odkaz:
http://arxiv.org/abs/2401.01228
Publikováno v:
Quantum Sci. Technol. 9 015011 (2023)
Quantum search algorithms offer a remarkable advantage of quadratic reduction in query complexity using quantum superposition principle. However, how an actual architecture may access and handle the database in a quantum superposed state has been lar
Externí odkaz:
http://arxiv.org/abs/2211.03941
Publikováno v:
Phys. Rev. A 104, 032415 (2021)
We propose a non-Gaussianity measure of a multimode quantum state based on the negentropy of quadrature distributions. Our measure satisfies desirable properties as a non-Gaussianity measure, i.e., faithfulness, invariance under Gaussian unitary oper
Externí odkaz:
http://arxiv.org/abs/2109.14353
Publikováno v:
Phys. Rev. Research 4, 043070 (2022)
Quantum technology offers great advantages in many applications by exploiting quantum resources like nonclassicality, coherence, and entanglement. In practice, an environmental noise unavoidably affects a quantum system and it is thus an important is
Externí odkaz:
http://arxiv.org/abs/2104.12307
Publikováno v:
Phys. Rev. Research 3, 033119 (2021)
We introduce a generalized concept of quantum teleportation in the framework of quantum measurement and reversing operation. Our framework makes it possible to find an optimal protocol for quantum teleportation enabling a faithful transfer of unknown
Externí odkaz:
http://arxiv.org/abs/2104.12178
In this work we investigate how to quantify the coherence of quantum measurements. First, we establish a resource theoretical framework to address the coherence of measurement and show that any statistical distance can be adopted to define a coherenc
Externí odkaz:
http://arxiv.org/abs/2008.03999
We investigate the quantum thermodynamics of two quantum systems, a two-level system and a four-level quantum photocell, each driven by photon pulses as a quantum heat engine. We set these systems to be in thermal contact only with a cold reservoir w
Externí odkaz:
http://arxiv.org/abs/2005.13185
Publikováno v:
Phys. Rev. E 101, 052128 (2020)
We study an arbitrary non-equilibrium dynamics of a quantum bipartite system coupled to a reservoir. For its characterization, we present a fluctuation theorem (FT) that explicitly addresses the quantum correlation of subsystems during the thermodyna
Externí odkaz:
http://arxiv.org/abs/2005.10523
Publikováno v:
Phys. Rev. Research 3, 043116 (2021)
While negativity in phase space is a well-known signature of nonclassicality, a wide variety of nonclassical states require their characterization beyond negativity. We establish a framework of nonclassicality in phase space that addresses nonclassic
Externí odkaz:
http://arxiv.org/abs/2005.05739