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Related publications (55)

The impact of classical control electronics on qubit fidelity

Quantum processors rely on classical electronic controllers to manipulate and read out the quantum state. As the performance of the quantum processor improves, non-idealities in the classical controller can become the performance bottleneck for the whole q ...

2018

Floquet Spectroscopy of a Strongly Driven Quantum Dot Charge Qubit with a Microwave Resonator

Pasquale Scarlino

We experimentally investigate a strongly driven GaAs double quantum dot charge qubit weakly coupled to a superconducting microwave resonator. The Floquet states emerging from strong driving are probed by tracing the qubit-resonator resonance condition. In ...

2018

A Co-design Methodology for Scalable Quantum Processors and their Classical Electronic Interface

Edoardo Charbon, Fabio Sebastiano

A quantum computer fundamentally comprises a quantum processor and a classical controller. The classical electronic controller is used to correct and manipulate the qubits, the core components of a quantum processor. To enable quantum computers scalable to ...

IEEE2018

Scanning Tunneling Spectroscopy with Superconducting Junctions

Jacob Senkpiel

This thesis contains two major topics, the restriction of tunneling to only a few channels in the scanning tunneling microscope (STM) and the interaction of local magnetic impurities with superconductivity. At a temperature of 15mK, the quantum back-action ...

EPFL2018

Cryogenic CMOS interfaces for quantum devices, 2017 7th IEEE International Workshop on Advances in Sensors and Interfaces (IWASI)

Edoardo Charbon, Harald Arjan Robert Homulle, Fabio Sebastiano

Quantum computers could efficiently solve problems that are intractable by today's computers, thus offering the possibility to radically change entire industries and revolutionize our lives. A quantum computer comprises a quantum processor operating at cry ...

2017

Quantum Brownian Motion at Strong Dissipation Probed by Superconducting Tunnel Junctions

Klaus Kern, Markus Etzkorn, Jacob Senkpiel, Berthold Jäck

We have investigated the phase dynamics of a superconducting tunnel junction at ultralow temperatures in the presence of high damping, where the interaction with environmental degrees of freedom represents the leading energy scale. In this regime, theory p ...

Amer Physical Soc2017

Nonlinear graphene quantum capacitors for electro-optics

Sina Khorasani, Akshay Koottandavida

Owing to its peculiar energy dispersion, the quantum capacitance property of graphene can be exploited in a two- dimensional layered capacitor configuration. Using graphene and boron nitride, respectively, as the electrodes and the insulating dielectric, a ...

Springer Nature2017

Mastering the statistical properties of microcavity polaritons

Albert Adiyatullin

Microcavity polaritons are hybrid quasiparticles emerging from the strong coupling between quantum well excitons and light in the resonator. Their unique half-light half-matter nature brings in specific properties like low effective mass, nonlinearity due ...

EPFL2017

An on/off Berry phase switch in circular graphene resonators

Donat Fabian Natterer, Yue Zhao

The phase of a quantum state may not return to its original value after the system's parameters cycle around a closed path; instead, the wave function may acquire a measurable phase difference called the Berry phase. Berry phases typically have been access ...

American Association for the Advancement of Science2017

A quantum electronic device

Bálint Náfrádi

This disclosure relates to quantum electronic devices for storing qubits. In particular, this disclosure relates to a quantum electronic device comprising a carbon nanosphere adapted to store a qubit represented by an electron spin and a control and readou ...

2017

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