scholarly journals Generation and eight-port homodyne characterization of time-bin qubits for continuous-variable quantum information processing

2013 ◽  
Vol 87 (4) ◽  
Author(s):  
Shuntaro Takeda ◽  
Takahiro Mizuta ◽  
Maria Fuwa ◽  
Jun-ichi Yoshikawa ◽  
Hidehiro Yonezawa ◽  
...  
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Quantum Information Processing ◽  
Continuous Variable

scholarly journals Generating superposition of up-to three photons for continuous variable quantum information processing

2013 ◽  
Vol 21 (5) ◽  
pp. 5529 ◽  
Author(s):  
Mitsuyoshi Yukawa ◽  
Kazunori Miyata ◽  
Takahiro Mizuta ◽  
Hidehiro Yonezawa ◽  
Petr Marek ◽  
...  
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Quantum Information Processing ◽  
Continuous Variable

scholarly journals Coherent preorder of quantum states

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.

scholarly journals Temporal distinguishability in Hong-Ou-Mandel interference for harnessing high-dimensional frequency entanglement

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Yuanyuan Chen ◽  
Sebastian Ecker ◽  
Lixiang Chen ◽  
Fabian Steinlechner ◽  
Marcus Huber ◽  
...  
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Degrees Of Freedom ◽  
Quantum Information Processing ◽  
Error Resilience ◽  
High Dimensional ◽  
Higher Dimensional ◽  
Quantum Science ◽  
High Information

AbstractHigh-dimensional quantum entanglement is currently one of the most prolific fields in quantum information processing due to its high information capacity and error resilience. A versatile method for harnessing high-dimensional entanglement has long been hailed as an absolute necessity in the exploration of quantum science and technologies. Here we exploit Hong-Ou-Mandel interference to manipulate discrete frequency entanglement in arbitrary-dimensional Hilbert space. The generation and characterization of two-, four- and six-dimensional frequency entangled qudits are theoretically and experimentally investigated, allowing for the estimation of entanglement dimensionality in the whole state space. Additionally, our strategy can be generalized to engineer higher-dimensional entanglement in other photonic degrees of freedom. Our results may provide a more comprehensive understanding of frequency shaping and interference phenomena, and pave the way to more complex high-dimensional quantum information processing protocols.

Demonstration of Dynamic Squeezing Gate for Continuous-Variable Quantum Information Processing

2014 ◽  
Author(s):  
Hisashi Ogawa ◽  
Kazunori Miyata ◽  
Hidehiro Yonezawa ◽  
Petr Marek ◽  
Radim Filip ◽  
...  
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Quantum Information Processing ◽  
Continuous Variable

scholarly journals Continuous-variable quantum information processing

2009 ◽  
Vol 4 (3) ◽  
pp. 337-354 ◽  
Author(s):  
U.L. Andersen ◽  
G. Leuchs ◽  
C. Silberhorn
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Quantum Information Processing ◽  
Continuous Variable
Sign in / Sign up

Export Citation Format

Share Document