Publication

A Review on Quantum Computing: From Qubits to Front-end Electronics and Cryogenic MOSFET Physics

Jean-Michel Sallese, Farzan Jazaeri, Seyed Armin Tajalli, Arnout Lodewijk M Beckers
2019
Conference Papers

Résumé

Quantum computing (QC) has already entered the industrial landscape and several multinational corporations have initiated their own research efforts. So far, many of these efforts have been focusing on superconducting qubits, whose industrial progress is currently way ahead of all other qubit implementations. This paper briefly reviews the progress made on the silicon-based QC platform, which is highly promising to meet the scale-up challenges by leveraging the semiconductor industry. We look at different types of qubits, the advantages of silicon, and techniques for qubit manipulation in the solid state. Finally, we discuss the possibility of co-integrating silicon qubits with FET-based, cooled front-end electronics, and review the device physics of MOSFETs at deep cryogenic temperatures.

Source officielle

https://infoscience.epfl.ch/entities/publication/06886d6f-beef-4ae0-af0a-b73e6295a4b1

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Jean-Michel Sallese, Farzan Jazaeri, Seyed Armin Tajalli, Arnout Lodewijk M Beckers
2019
Conference Papers

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/06886d6f-beef-4ae0-af0a-b73e6295a4b1

À propos de ce résultat

Concepts associés (25)

Superconducting quantum computing

Superconducting quantum computing is a branch of solid state quantum computing that implements superconducting electronic circuits using superconducting qubits as artificial atoms, or quantum dots. For superconducting qubits, the two logic states are the ground state and the excited state, denoted respectively. Research in superconducting quantum computing is conducted by companies such as Google, IBM, IMEC, BBN Technologies, Rigetti, and Intel. Many recently developed QPUs (quantum processing units, or quantum chips) utilize superconducting architecture.

Qubit

En informatique quantique, un qubit ou qu-bit (quantum + bit ; prononcé ), parfois écrit qbit, est un système quantique à deux niveaux, qui représente la plus petite unité de stockage d'information quantique. Ces deux niveaux, notés et selon le formalisme de Dirac, représentent chacun un état de base du qubit et en font donc l'analogue quantique du bit. Grâce à la propriété de superposition quantique, un qubit stocke une information qualitativement différente de celle d'un bit.

Charge qubit

In quantum computing, a charge qubit (also known as Cooper-pair box) is a qubit whose basis states are charge states (i.e. states which represent the presence or absence of excess Cooper pairs in the island). In superconducting quantum computing, a charge qubit is formed by a tiny superconducting island coupled by a Josephson junction (or practically, superconducting tunnel junction) to a superconducting reservoir (see figure). The state of the qubit is determined by the number of Cooper pairs that have tunneled across the junction.

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