Quantum information science

Quantum teleportation, entanglement and the manufacturing of quantum computers depend on a comprehensive understanding of quantum physics and engineering. Google and IBM have invested significantly in quantum computer hardware research, leading to significant progress in manufacturing quantum computers since the 2010s. Currently, it is possible to create a quantum computer with over 100 qubits, but the error rate is high due to the lack of suitable materials for quantum computer manufacturing.Shiba, K., Sakamoto, K., Yamaguchi, K., Malla, D.B. & Sogabe, T. 2019, Convolution filter embedded quantum gate autoencoder, Cornell University Library, arXiv.org, Ithaca. Majorana fermions may be a crucial missing material.{{Cite journal|title=Classification of topological quantum matter with symmetries|first1=Ching-Kai|last1=Chiu|first2=Jeffrey C. Y.|last2=Teo|first3=Andreas P.|last3=Schnyder|first4=Shinsei|last4=Ryu|date=August 31, 2016|journal=Reviews of Modern Physics|volume=88|issue=3|page=035005 |doi=10.1103/RevModPhys.88.035005|arxiv=1505.03535 |bibcode=2016RvMP...88c5005C |doi-access=free}}

Quantum cryptography devices are now available for commercial use. The one time pad, a cipher used by spies during the Cold War, uses a sequence of random keys for encryption. These keys can be securely exchanged using quantum entangled particle pairs, as the principles of the no-cloning theorem and wave function collapse ensure the secure exchange of the random keys. The development of devices that can transmit quantum entangled particles is a significant scientific and engineering goal.{{cn|date=February 2023}}

Qiskit, Cirq and Q Sharp are popular quantum programming languages. Additional programming languages for quantum computers are needed, as well as a larger community of competent quantum programmers. To this end, additional learning resources are needed, since there are many fundamental differences in quantum programming which limits the number of skills that can be carried over from traditional programming.{{cn|date=February 2023}}

Quantum algorithms and quantum complexity theory are two of the subjects in algorithms and computational complexity theory. In 1994, mathematician Peter Shor introduced a quantum algorithm for prime factorization that, with a quantum computer containing 4,000 logical qubits, could potentially break widely used ciphers like RSA and ECC, posing a major security threat. This led to increased investment in quantum computing research and the development of post-quantum cryptography to prepare for the fault-tolerant quantum computing (FTQC) era.{{Cite book |last1=Häner |first1=Thomas |last2=Jaques |first2=Samuel |last3=Naehrig |first3=Michael |last4=Roetteler |first4=Martin |last5=Soeken |first5=Mathias |date=2020 |editor-last=Ding |editor-first=Jintai |editor2-last=Tillich |editor2-first=Jean-Pierre |chapter=Improved Quantum Circuits for Elliptic Curve Discrete Logarithms |chapter-url=https://link.springer.com/chapter/10.1007/978-3-030-44223-1_23 |title=Post-Quantum Cryptography |series=Lecture Notes in Computer Science |language=en |location=Cham |publisher=Springer International Publishing |pages=425–444 |doi=10.1007/978-3-030-44223-1_23 |isbn=978-3-030-44223-1|arxiv=2001.09580 }}

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• Glossary of quantum computing
• Information theory
• Quantum mechanics
• Quantum computing
• Quantum error correction
• Quantum information theory
• Quantum cryptography and its generalization, quantum communication
• Quantum communication complexity
• Quantum entanglement, as seen from an information-theoretic point of view
• Quantum dense coding
• Quantum teleportation
• Entanglement-assisted classical capacity
• No-communication theorem
• Quantum capacity
• Quantum communication channel
• Quantum decision tree complexity
• Timeline of quantum computing and communication
• Petz recovery map

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{{Reflist}}

• {{Cite book|title=Quantum Computation and Quantum Information|last1=Nielsen|first1=Michael A.|last2=Chuang|first2=Isaac L.|date=June 2012|publisher=Cambridge University Press|isbn=9780511992773|edition= 10th anniversary |location=Cambridge|oclc=700706156|author-link=Michael Nielsen|author-link2=Isaac Chuang}}

• [https://www.quantiki.org/ Quantiki] – quantum information science portal and wiki.
• [https://web.archive.org/web/20051023125521/http://qist.ect.it/ ERA-Pilot QIST WP1] European roadmap on Quantum Information Processing and Communication
• [https://www.imperial.ac.uk/quantum-engineering-science-technology/ QIIC] – Quantum Information, Imperial College London.
• [https://web.archive.org/web/20170617023855/http://www.qi.leeds.ac.uk/ QIP] – Quantum Information Group, University of Leeds. The quantum information group at the University of Leeds is engaged in researching a wide spectrum of aspects of quantum information. This ranges from algorithms, quantum computation, to physical implementations of information processing and fundamental issues in quantum mechanics. Also contains some basic tutorials for the lay audience.
• [https://www.ucm.es/mathqi mathQI] Research Group on Mathematics and Quantum Information.
• [https://cqist.usc.edu/ CQIST] Center for Quantum Information Science & Technology at the University of Southern California
• [http://cquic.unm.edu/ CQuIC] Center for Quantum Information and Control, including theoretical and experimental groups from University of New Mexico, University of Arizona.
• [http://www.quantumlah.org/ CQT] Centre for Quantum Technologies at the National University of Singapore
• [https://www.cqc2t.org/ CQC2T] Centre for Quantum Computation and Communication Technology
• [https://faculty.lsu.edu/quantum/index.php QST@LSU] Quantum Science and Technologies Group at Louisiana State University

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