Realization of qudits in coupled potential wells

Ariel Landau, Yakir Aharonov, Eliahu Cohen

Research output: Contribution to journalArticle (Academic Journal)peer-review

5 Citations (Scopus)
283 Downloads (Pure)


Quantum computation strongly relies on the realization, manipulation, and control of qubits. A central method for realizing qubits is by creating a double-well potential system with a significant gap between the first two eigenvalues and the rest. In this work, we first revisit the theoretical grounds underlying the double-well qubit dynamics, then proceed to suggest novel extensions of these principles to a triple-well qutrit with periodic boundary conditions, followed by a general d-well analysis of qudits. These analyses are based on representations of the special unitary groups SU(d) which expose the systems’ symmetry and employ them for performing computations. We conclude with a few notes on coherence and scalability of d-well systems.
Original languageEnglish
Article number1650029
JournalInternational Journal of Quantum Information
Issue number5
Early online date23 Aug 2016
Publication statusPublished - Aug 2016


  • Qudits
  • potential wells
  • quantum gates
  • special unitary group


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