scholarly journals Materials science for quantum information science and technology

MRS Bulletin ◽  
2020 ◽  
Vol 45 (6) ◽  
pp. 485-497
Author(s):  
Christopher J.K. Richardson ◽  
Vincenzo Lordi ◽  
Shashank Misra ◽  
Javad Shabani
Keyword(s):  
Quantum Information ◽  
Information Science ◽  
Materials Science ◽  
Science And Technology ◽  
Quantum Information Science ◽  
Image Position

Abstract

scholarly journals Entanglement 25 Years after Quantum Teleportation: Testing Joint Measurements in Quantum Networks

Entropy ◽  
2019 ◽  
Vol 21 (3) ◽  
pp. 325 ◽  
Author(s):  
Nicolas Gisin
Keyword(s):  
Quantum Information ◽  
Quantum State ◽  
Quantum Teleportation ◽  
Information Science ◽  
Science And Technology ◽  
Quantum Measurements ◽  
Quantum Information Science ◽  
Joint Measurement ◽  
Quantum Networks

Twenty-five years after the invention of quantum teleportation, the concept of entanglement gained enormous popularity. This is especially nice to those who remember that entanglement was not even taught at universities until the 1990s. Today, entanglement is often presented as a resource, the resource of quantum information science and technology. However, entanglement is exploited twice in quantum teleportation. Firstly, entanglement is the “quantum teleportation channel”, i.e., entanglement between distant systems. Second, entanglement appears in the eigenvectors of the joint measurement that Alice, the sender, has to perform jointly on the quantum state to be teleported and her half of the “quantum teleportation channel”, i.e., entanglement enabling entirely new kinds of quantum measurements. I emphasize how poorly this second kind of entanglement is understood. In particular, I use quantum networks in which each party connected to several nodes performs a joint measurement to illustrate that the quantumness of such joint measurements remains elusive, escaping today’s available tools to detect and quantify it.

scholarly journals Quantum information science and technology in Japan

2019 ◽  
Vol 4 (2) ◽  
pp. 020502 ◽  
Author(s):  
Yoshihisa Yamamoto ◽  
Masahide Sasaki ◽  
Hiroki Takesue
Keyword(s):  
Quantum Information ◽  
Information Science ◽  
Science And Technology ◽  
Quantum Information Science

GaN lasers for quantum information science and technology (QIST) applications

2020 ◽  
Author(s):  
S.P. Najda ◽  
P. Perlin ◽  
M. Leszczyński ◽  
S. Stanczyk ◽  
C.C. Clark ◽  
...  
Keyword(s):  
Quantum Information ◽  
Information Science ◽  
Science And Technology ◽  
Quantum Information Science

scholarly journals Control and Measurement of Quantum Light Pulses for Quantum Information Science and Technology

2021 ◽  
pp. 2000150
Author(s):  
Michał Karpiński ◽  
Alex O. C. Davis ◽  
Filip Sośnicki ◽  
Valérian Thiel ◽  
Brian J. Smith
Keyword(s):  
Quantum Information ◽  
Information Science ◽  
Science And Technology ◽  
Quantum Information Science ◽  
Light Pulses

Spinning Gems for Quantum Technologies

Impact ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 51-53
Author(s):  
Yuimaru Kubo
Keyword(s):  
Quantum Information ◽  
Research Team ◽  
Information Science ◽  
Quantum Computer ◽  
Science And Technology ◽  
Quantum Information Science ◽  
Near Future

The knowledge and technologies invented and accumulated in the field of quantum information science are turning into near-future industrial technologies and products. The most obvious example is the quantum computer, in which many IT giants started investing large sums to develop. Besides the quantum computer, 'quantum technologies' also includes sensing and communication. Dr Yuimaru Kubo is an expert on quantum information science and technologies with 'spins in gem crystals'. He is based at the Okinawa Institute of Science and Technology (OIST) where his research team is currently investigating how quantum information can be stored, transmitted, or amplified with unprecedented efficiencies utilising the spins of electrons or nuclei in 'gem crystals'.

LINEAR MAPS PRESERVING TENSOR PRODUCTS OF RANK-ONE HERMITIAN MATRICES

2014 ◽  
Vol 98 (3) ◽  
pp. 407-428 ◽  
Author(s):  
JINLI XU ◽  
BAODONG ZHENG ◽  
AJDA FOŠNER
Keyword(s):  
Quantum Information ◽  
Positive Integer ◽  
Information Science ◽  
Tensor Products ◽  
Hermitian Matrices ◽  
Quantum Information Science ◽  
Linear Maps ◽  
Rank One ◽  
Image Position ◽  
Positive Integers

For a positive integer $n\geq 2$, let $M_{n}$ be the set of $n\times n$ complex matrices and $H_{n}$ the set of Hermitian matrices in $M_{n}$. We characterize injective linear maps ${\it\phi}:H_{m_{1}\cdots m_{l}}\rightarrow H_{n}$ satisfying $$\begin{eqnarray}\text{rank}(A_{1}\otimes \cdots \otimes A_{l})=1\Longrightarrow \text{rank}({\it\phi}(A_{1}\otimes \cdots \otimes A_{l}))=1\end{eqnarray}$$ for all $A_{k}\in H_{m_{k}}$, $k=1,\dots ,l$, where $l,m_{1},\dots ,m_{l}\geq 2$ are positive integers. The necessity of the injectivity assumption is shown. Moreover, the connection of the problem to quantum information science is mentioned.

Sign in / Sign up

Export Citation Format

Share Document