Zobrazeno 1 - 10
of 365
pro vyhledávání: '"Fu, H. C."'
Publikováno v:
Scientific Reports Vol. 7, 42390 (2017)
We theoretically investigate the chiral topological excitons emerging in the monolayer transition metal dichalcogenides, where a bulk energy gap of valley excitons is opened up by a position dependent external magnetic field. We find two emerging chi
Externí odkaz:
http://arxiv.org/abs/1703.10336
Complete controllability of degenerate quantum system using quantum accessor modeled as a qubit chain with nearest neighborhood coupling is investigated. Sufficient conditions on the length of accessor and the way of coupling between controlled syste
Externí odkaz:
http://arxiv.org/abs/1312.6913
Autor:
Tang, Jianju, Fu, H. C.
Control protocol to drive finite dimensional quantum systems to an arbitrary target state using square pulses is proposed explicitly. It is a multi-cycle control process and in each cycle we apply square pulses to cause single or a few transitions be
Externí odkaz:
http://arxiv.org/abs/1312.5014
Autor:
Tang, Jianju, Fu, H. C.
The control protocols of two types of finite dimensional quantum systems are proposed. The feasibility of each protocol is possible and an arbitrary target state can be achieved from initial state by a constant field. The control parameters which are
Externí odkaz:
http://arxiv.org/abs/1212.6452
Autor:
Tang, Jianju, Fu, H. C.
An exact and analytic control protocol of two types of finite dimensional quantum systems is proposed. The system can be drive to an arbitrary target state using cosine classical fields in finite cycles. The control parameters which are time periods
Externí odkaz:
http://arxiv.org/abs/1212.2279
Publikováno v:
Phys. Rev. A 81, 062111 (2010)
Decoherence for a one-dimensional coupled-resonator waveguide with a two-level system inside one of resonators, induced by their interaction with corresponding environments, is investigated. Each environment is modeled as a continuum of harmonic osci
Externí odkaz:
http://arxiv.org/abs/1005.5224
Autor:
Zhang, Zhedong, Fu, H. C.
Complete controllability of finite dimensional quantum systems with energy level degeneracy is investigated using two different approaches. One approach is to apply a weak constant field to eliminate the degeneracy and then control it using technique
Externí odkaz:
http://arxiv.org/abs/0912.1806
Publikováno v:
J. Phys. A: Math. Theor. 42 (2009) 045303
A pure indirect control of quantum systems via quantum accessor is investigated. In this control scheme, we do not apply any external classical excitation fields on the controlled system and we control a quantum system via a quantum accessor and clas
Externí odkaz:
http://arxiv.org/abs/0807.1384
Publikováno v:
QIC 10, 0087(2010).
We present a new analysis on the quantum control for a quantum system coupled to a quantum probe. This analysis is based on the coherent control for the quantum system and a hyperthesis that the probe can be prepared in specified initial states. The
Externí odkaz:
http://arxiv.org/abs/0805.0057
This is the second one in our series of papers on indirect quantum control assisted by quantum accessor. In this paper we propose and study a new class of indirect quantum control(IDQC) scheme based on the initial states preparation of the accessor.
Externí odkaz:
http://arxiv.org/abs/0712.0488