BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:Using atom-like spins in semiconductors toward scalable quantum co mputing DTSTART:20211215T160000Z DTEND:20211215T180000Z DTSTAMP:20260626T160735Z UID:ab1081bb-6338-4e18-bf66-c732583163de SEQUENCE:11 CREATED:20211206T100451Z DESCRIPTION:Password: 921026In a world where the amount of data to process is steadily increasing\, the quantum nature of matter offers new possibil ities to develop concepts\, which may overcome nowadays technologies. Imp lications are expected in research areas that can range from quantum comp utation\, cryptography\, and quantum simulation.To be useful\, a qubit (th e elementary quantum unit of information) needs to be both isolated from i ts environment and precisely controllable\, which places strict requireme nts on its physical realization. In particular\, spins in solids are one o f the most promising realizations due to their potential for scalability and miniaturization. Furthermore\, in these systems\, quantum control has been established and electron spin coherence times now exceed several sec onds. Even so\, a critical challenge in these systems consists of developi ng a robust two-qubit gate that can be scaled up to a larger network.In t his seminar\, I will overview some of the challenges of this field and int roduce a new mechanism for "\;long-range"\; interaction. Making us e of independent readout of two electron spins\, we demonstrate coherent exchange interaction mediated by a multielectron quantum dot. This result provides a possible route to the realization of multi-qubit quantum circu its based on single spins.Short bio: My research activities have mostly ce ntred on the physics of nano-devices\, and\, in particular\, on giving a d irect and "\;local"\; understanding to a significant number of fu ndamental phenomena through experiments dealing with electron quantum int erference and correlations\, Coulomb blockade\, and the quantum Hall regim e. After 2015\, my work has focused on implementing "\;spin qubits&qu ot\;\, i.e. units of quantum information represented by isolated spins con fined in solid-state systems. In the course of my career\, I have carried out research in laboratories worldwide including France\, Belgium\, Denma rk\, Australia\, and Austria. In December 2020\, I have joined the Quantu m Information Team at the Hitachi Cambridge Laboratory (UK). LAST-MODIFIED:20211207T115401Z LOCATION:(Online): https://videoconf-colibri.zoom.us/j/83876336173?pwd=eXd CV09VcjRlNEk3WTJPaE55NHJyUT09 URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/using-atom-like-spins-in-s emiconductors-toward-scalable-quantum-computing/ X-ALT-DESC;FMTTYPE=text/html:

Password: 92 1026


In a world where the amount of data to process is steadily increasing\, the qua ntum nature of matter offers new possibilities to develop concepts\, whic h may overcome nowadays technologies. Implications are expected in researc h areas that can range from quantum computation\, cryptography\, and quan tum simulation.

To be useful\, a qubit (the elementary quantum un it of information) needs to be both isolated from its environment and prec isely controllable\, which places strict requirements on its physical rea lization. In particular\, spins in solids are one of the most promising re alizations due to their potential for scalability and miniaturization. Fu rthermore\, in these systems\, quantum control has been established and el ectron spin coherence times now exceed several seconds. Even so\, a criti cal challenge in these systems consists of developing a robust two-qubit g ate that can be scaled up to a larger network.

In this seminar\, I will overview some of the challenges of this field and introduce a new mechanism for "\;long-range"\; interaction. Making use of indepen dent readout of two electron spins\, we demonstrate coherent exchange inte raction mediated by a multielectron quantum dot. This result provides a p ossible route to the realization of multi-qubit quantum circuits based on single spins.

< br/>

Short bio: My research activities have mostly centred on the physics of nano-devices\, and\, in particular\ , on giving a direct and "\;local"\; understanding to a significa nt number of fundamental phenomena through experiments dealing with electr on quantum interference and correlations\, Coulomb blockade\, and the qua ntum Hall regime. After 2015\, my work has focused on implementing "\ ;spin qubits"\;\, i.e. units of quantum information represented by iso lated spins confined in solid-state systems. In the course of my career\, I have carried out research in laboratories worldwide including France\, Belgium\, Denmark\, Australia\, and Austria. In December 2020\, I have jo ined the Quantum Information Team at the Hitachi Cambridge Laboratory (UK ).

END:VEVENT END:VCALENDAR