Quantum Nanoelectronics Seminars

All the "Quantum Nanoelectronics Seminars" past and future in this section.

The next seminar will be exceptionally held on :
Monday 4 December 2017 at 2pm, room « Remy Lemaire » (K223), Institut Néel
Mandatory registration


Photonic counterparts of Cooper pairs
Marcelo Franca Santos (Universidade Federal do Rio de Janeiro)

Photons are the elementary particles of light. Contrary to most particles, photons do not interact directly with each other in vacuum.
However, when propagating in a material, e.g. water, photon pairs may interact through the medium. In the Raman effect, for example, it is possible that a photon creates or absorbs a vibrational excitation of the material. In this work, we demonstrate theoretically and experimentally that photon pairs may interact via a virtual vibration, meaning that the energy exchanged in the process does not correspond to a quantum of vibrational energy. The same process occurs in a metal at very low temperatures, where virtual vibrations of the medium create an effective attractive interaction between electrons, forming the so-called Cooper pairs. This phenomenon changes a normal metal into a superconductor. We have shown the analogue of this phenomenon with light, namely an effective photon-photon interaction mediated by a virtual vibration, i.e, a photonic-like Cooper pair. An important next step is to test how far the analogy with superconductivity extends.

https://journals.aps.org/prl/accepted/0a071Y84U5517a5dc9650932dd3e8ac53d889212c

Contact : Marcelo Franca Santos

The organization committee,
M. Hocevar, B. Sacepe, R. Whitney, C. Groth

If you want to plan invitations, please contact us at the following address :
equipe-seminaires-nano@fondation-nanosciences.fr

Upcoming
19 Decembre 2017
Romain Danneau (Karlsruhe Institute of Technology, Germany)

Past

2017 ➜28 November 2017 (…)

2017
28 November 2017
Near-quantum-limited microwave amplification and nonreciprocal transmission using engineered mechanical dissipation by Alexey Feofanov (EPFL Lausanne)
14 November 2017
Electron Transfer between Quantum Dots by Tobias Krähenmann (ETH Zurich)
7 November 2017
The Josephson effect in semiconductor channels : From fundamental science to qubit applications by Attila Geresdi (QuTech & Kavli Institute of Nanoscience, Delft University of Technology)
17 October 2017
Superconducting microwave cavities as memories for modular quantum information processing by Wolfgang Pfaff (Yale University, USA)
10 October 2017
From single magnetic adatoms on superconductors to coupled spin chains
by Katharina Franke (Freie Universität Berlin)

26 September 2017
Revealing a quantum phase transition with a Kondo circuit by Zubair Iftikhar (SPEC, CEA)
19 September 2017
Tinkering with Majoranas by Anton Akhmerov (TU Delft)
11 July 2017
The role of electron-electron interactions in graphene by Shaffique Adam (National University of Singapore)
20 June 2017
Charge quantum interference device on superconducting nano-wiresby by Oleg Astafiev (Royal Holloway, University of London)
13 June 2017
Evolving functionality in nanomaterial networks by Wilfred G. van der Wiel (University of Twente, The Netherlands)
6 June 2017
Relaxation of an Electron Spin in a Moving Quantum Dotby Xuedong Hu (Department of Physics, University at Buffalo, USA)
30 May 2017
Understanding and exploiting interactions between components in quantum circuits by Philippe Joyez (SPEC, CEA-Saclay)
22 May 2017
Feedback-tuned high fidelity gates for (GaAs based) two-electron spin qubits by Hendrik Bluhm (RWTH Aachen University, Germany)
16 May 2017
Electron teleportation in multi-terminal Majorana islands : Kondo effect at high temperature by Karen Michaeli (Weizmann Institute for Science, Israel)
9 May 2017
Superconducting Atom Chips by Rainer Dumke (Nanyang Technological University, Singapore)
4 May 2017
Quantum Physics in One Dimension using Nanostructured Josephson-junction Arrays by Tim Duty (University of New South Wales, Sydney)
20 April 2017
Les bits quantiques MOS by Prof. Michel Pioro-Ladrière (Professeur associé, Département de physique, Université de Sherbrooke et Directeur adjoint, Institut Quantique, Université de Sherbrooke)
11 April 2017
Quantum microwave devices based on inelastic Cooper pair tunneling by Max Hofheinz (CEA INAC)
28 March 2017
Spin to charge conversion at room temperature using spin orbit coupling and recently discovered topological insulators by Laurent Vila (SPINTEC)
21 March 2017
Spin Dynamics in Out-of-Equilibrium Superconductors by Charis Quay (Laboratoires de Physique des Solides, Université Paris Sud)
14 March 2017
From CMOS transistors to CMOS spin qubits by Marc Sanquer (INAC/PHELIQS/LATEQS CEA & UGA)
14 February 2017
Quantized circular photogalvanic effect in Weyl semimetals by Adolfo Grushin (Department of Physics, UC Berkeley et Institut Néel, CNRS & UGA)
7 February 2017
Confining the state of light to a quantum manifold by engineered two-photon loss by Zaki Leghtas (Laboratoire Pierre Aigrain - Ecole Normale Supérieure)
31 January 2017
Many-Body Localization Basics - Recent Highlights - Experimental possibilities by Nicolas Laflorencie (Laboratoire de Physique Théorique, Toulouse)
24 January 2017
Fluctuation theorems in engineered environments by Marcelo F. Santos (Universidade Federal do Rio de Janeiro, Brazil)
17 January 2017
THz Spectroscopy on Disordered Superconductors and the “Superconducting Dome” of Granular Aluminum by Marc Scheffler (Physikalisches Institut, University of Stuttgart, Germany)
10 January 2017
Mesoscopic Spectroscopy with Josephson Junctions by Caglar GIRIT (Collège de France, Paris)

News

Agenda

Quantum Nanoelectronics Seminar : Romain Danneau

mardi 19 décembre 2017 - 14h00 - Room « Remy Lemaire » (K223)

Tailoring supercurrent confinement in (...)

more +

Quantum Nanoelectronics Seminar : Erik Bakkers

mardi 6 mars 2018 - 14h00 - Room « Remy Lemaire » (K223)

Bottom-up grown nanowire quantum devices (...)

more +

Calendar