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We show that the U(2) group structure of thin barriers can be adopted for quantum information processing when used in combination with environmental potential whose bouncing modes are profile preserving. Qubits are realized as wave…

Quantum Physics · Physics 2007-05-23 Taksu Cheon

Topological error-correcting codes, such as surface codes and color codes, are promising because quantum operations are realized by two-dimensionally (2D) arrayed quantum bits (qubits). However, physical wiring of electrodes to qubits is…

Quantum Physics · Physics 2017-09-06 Tetsufumi Tanamoto , Hayato Goto

The strong anharmonicity and high coherence times inherent to fluxonium superconducting circuits are beneficial for quantum information processing. In addition to requiring high-quality physical qubits, a quantum processor needs to be…

First solid state quantum computer was built using transmons (cooper pair boxes). The operation of the computer is limited because of using a number of the rigit cooper boxes working with fixed frequency at temperatures of superconducting…

Quantum Physics · Physics 2016-09-08 S. A. Moiseev , F. F. Gubaidullin , S. N. Andrianov

We propose a quantum computer architecture based on quantum dots both for short distance and for long distance communication/computation. Our scheme exploits the natural characteristics of self-assembled quantum dots and it is scalable. It…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Irene D'Amico

Emerging technologies that employ quantum physics offer fundamental enhancements in information processing tasks, including sensing, communications, and computing. Here, we introduce the quantum phased array, which generalizes the operating…

Quantum Physics · Physics 2024-06-14 Volkan Gurses , Samantha I. Davis , Neil Sinclair , Maria Spiropulu , Ali Hajimiri

The development of quantum annealing machines (QAMs) based on superconducting qubits has progressed greatly in recent years and these machines are now widely used in both academia and commerce. On the other hand, QAMs based on semiconductor…

Quantum Physics · Physics 2019-03-27 Tetsufumi Tanamoto , Yoshifumi Nishi , Jun Deguchi

Large scale quantum computers will consist of many interacting qubits. In this paper we expand the two flux qubit coupling scheme first devised in [Phys. Rev. B {\bf 70}, 140501 (2004)] and realized in [Science {\bf 314}, 1427 (2006)] to a…

Quantum Physics · Physics 2013-05-29 Peter Groszkowski , Austin G. Fowler , Felix Motzoi , Frank K. Wilhelm

We introduce a systematic formalism for two-resonator circuit QED, where two on-chip microwave resonators are simultaneously coupled to one superconducting qubit. Within this framework, we demonstrate that the qubit can function as a…

Mesoscale and Nanoscale Physics · Physics 2008-09-23 Matteo Mariantoni , Frank Deppe , A. Marx , R. Gross , F. K. Wilhelm , E. Solano

Since the 1998 proposal to build a quantum computer using dopants in semiconductors as qubits, much progress has been achieved on semiconductors nano fabrication and control of charge and spins in single dopants. However, an important…

Mesoscale and Nanoscale Physics · Physics 2018-11-26 J. C. Abadillo-Uriel , Belita Koiller , M. J. Calderón

We propose a quantum computation architecture based on geometries with nearest-neighbor interactions, including e.g. planar structures. We show how to efficiently split the role of qubits into data and entanglement-generation qubits.…

Quantum Physics · Physics 2026-01-28 Wolfgang Dür

Subwavelength ring-shaped structures of quantum emitters exhibit outstanding radiation properties and are useful for antennas, excitation transport, and storage. Taking inspiration from the oligomeric geometry of biological light-harvesting…

Superconducting quantum hardware architectures have been designed by considering the physical constraints of the underlying physics. These general-purpose architectures leave room for customization and optimization that can be exploited…

Quantum Physics · Physics 2024-05-06 Jagatheesan Kunasaikaran , Kevin Mato , Robert Wille

As designs for superconducting qubits become more complex, 3D integration of two or more vertically bonded chips will become necessary to enable increased density and connectivity. Precise control of the spacing between these chips is…

We propose a scalable and robust architecture for one-way quantum computation using coupled networks of superconducting transmission line resonators. In our protocol, quantum information is encoded into the long-lived photon states of the…

Quantum Physics · Physics 2015-06-03 Chun-Wang Wu , Ming Gao , Hong-Yi Li , Zhi-Jiao Deng , Hong-Yi Dai , Ping-Xing Chen , Cheng-Zu Li

We theoretically study single and two-qubit dynamics in the circuit QED architecture. We focus on the current experimental design [Wallraff et al., Nature 431, 162 (2004); Schuster et al., Nature 445, 515 (2007)] in which superconducting…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Alexandre Blais , Jay Gambetta , A. Wallraff , D. I. Schuster , S. M. Girvin , M. H. Devoret , R. J. Schoelkopf

To demonstrate supremacy of quantum computing, increasingly large-scale superconducting quantum computing chips are being designed and fabricated. However, the complexity of simulating quantum systems poses a significant challenge to…

Quantum Physics · Physics 2025-07-25 Hao Ai , Yu-xi Liu

Most previous 3D IC research focused on stacking traditional 2D silicon layers, so the interconnect reduction is limited to inter-block delays. In this paper, we propose techniques that enable efficient exploration of the 3D design space…

Hardware Architecture · Computer Science 2025-08-20 Yongxiang Liu , Yuchun Ma , Eren Kurshan , Glenn Reinman , Jason Cong

As quantum computing progresses, the need for scalable solutions to address large-scale computational problems has become critical. Quantum supercomputers are the next upcoming frontier by enabling multiple quantum processors to collaborate…

Quantum Physics · Physics 2025-11-20 Peiyi Li , Chenxu Liu , Ji Liu , Huiyang Zhou , Ang Li

We propose a quantum dot architecture for enabling universal quantum information processing. Quantum registers, consisting of arrays of vertically stacked self-assembled semiconductor quantum dots, are connected by chains of in-plane…

Quantum Physics · Physics 2009-11-13 Timothy P. Spiller , Irene D'Amico , Brendon W. Lovett