Amination of the Gd@C82 endohedral fullerene: tunable substitution effect on quantum coherence behaviors

Zheng Liu; Huan Huang; Ye-Xin Wang; Bo-Wei Dong; Bao-Yun Sun; Shang-Da Jiang; Song Gao

doi:10.1039/d0sc02182b

Amination of the Gd@C82 endohedral fullerene: tunable substitution effect on quantum coherence behaviors

Chemical Science ◽

10.1039/d0sc02182b ◽

2020 ◽

Vol 11 (39) ◽

pp. 10737-10743 ◽

Cited By ~ 2

Author(s):

Zheng Liu ◽

Huan Huang ◽

Ye-Xin Wang ◽

Bo-Wei Dong ◽

Bao-Yun Sun ◽

...

Keyword(s):

Information Processing ◽

Quantum Information ◽

Quantum Coherence ◽

Quantum Information Processing ◽

Substitution Effect ◽

Quantum Phase ◽

Endohedral Fullerene ◽

Memory Time ◽

Phase Memory

Amination of the endohedral fullerene Gd@C82 exhibits enhanced quantum phase memory time and tunable substitution effect for quantum information processing.

Download Full-text

Coherent preorder of quantum states

Quantum Information and Computation ◽

10.26421/qic20.13-14-3 ◽

2020 ◽

Vol 20 (13&14) ◽

pp. 1124-1137

Author(s):

Zhaofang Bai ◽

Shuanping Shuanping Du

Keyword(s):

Information Processing ◽

Quantum Information ◽

Coherent States ◽

Quantum Coherence ◽

Quantum Information Processing ◽

Quantum States ◽

Mixed States ◽

Quantum Hypothesis ◽

Quantum Hypothesis Testing

As an important quantum resource, quantum coherence play key role in quantum information processing. It is often concerned with manipulation of families of quantum states rather than individual states in isolation. Given two pairs of coherent states $(\rho_1,\rho_2)$ and $(\sigma_1,\sigma_2)$, we are aimed to study how can we determine if there exists a strictly incoherent operation $\Phi$ such that $\Phi(\rho_i) =\sigma_i,i = 1,2$. This is also a classic question in quantum hypothesis testing. In this note, structural characterization of coherent preorder under strongly incoherent operations is provided. Basing on the characterization, we propose an approach to realize coherence distillation from rank-two mixed coherent states to $q$-level maximally coherent states. In addition, one scheme of coherence manipulation between rank-two mixed states is also presented.

Download Full-text