QUANTUM PROSPECTS FOR BEYOND MOORE Leti Devices Workshop | Silvano - PowerPoint PPT Presentation

QUANTUM PROSPECTS FOR BEYOND MOORE Leti Devices Workshop | Silvano De Franceschi| December 4, 2016

UNEXPLOITED QUANTUM PHYSICS Quantum Superposition • Quantum Entanglement • | 2 Leti Devices Workshop | Silvano De Franceschi | December 4, 2016

EXPONENTIAL QUANTUM COMPLEXITY Classical Computer with Binary Logic • Classical bit: 0,1 N-bit state: single combination of N bits (e.g. 01001…01) Quantum Computer • ψ 〉 = a  0 〉 + b  1 〉 Single qubit state: ψ 〉 = a  00 〉 + b  10 〉 + c  01 〉 + d  11 〉 2-qubit state: ψ 〉 = a  000 〉 + b  100 〉 + c  010 〉 + … 3-qubit state: …. N-qubit state defined by 2 N complex numbers Naturally built-in parallelism | 3 Leti Devices Workshop | Silvano De Franceschi | December 4, 2016

QUANTUM TECHNOLOGIES Quantum Internet • • To ensure safe data transfer Quantum Simulators • • To predict material properties, chemical compounds and reactions,… • Applications to many different areas (fertilizers, energy,…) • DO NOT REQUIRE FULL CONTROL OF EACH QUBIT • CAN BE USEFUL ALREADY WITH SMALL (~100) NUMBERS OF QUBITS Universal Quantum Computers • • Optimization tasks • Database searching • Machine learning • REQUIRE LARGE NUMBERS (~10 6 ) OF INDIVIDUALLY CONTROLLED QUBITS [Further reading: http://qurope.eu/manifesto] | 4 Leti Devices Workshop | Silvano De Franceschi | December 4, 2016

TURNING TRANSISTORS INTO QUBITS gate Leveraging FDSOI technology Si BOX 10 nm Back-gate control • Corner-state confinement • 3D stacking (CoolCube TM ) • silicon qubit (prototype) scalable quantum processor | 5 Leti Devices Workshop | Silvano De Franceschi | December 4, 2016

QUANTUM SILICON @ GRENOBLE | 6 Leti Devices Workshop | Nom Prénom | December 4, 2016

FIRST QUBIT ISSUED FROM FAB LINE gate 2 200 nm source drain gate 1 spin qubit readout spin Compact Design • Qubit-Based on Hole Spin • • All-electrical control • Lower hyperfine coupling • No valley degeneracy Maurand et al., Nature Comm. (2016) | 7 Leti Devices Workshop | Silvano De Franceschi | December 4, 2016

FIRST QUBIT ISSUED FROM FAB LINE spin qubit readout spin Electrically Induced Rabi Oscillations • -3.60 Current (A) -3.70 -3.80 -12 -3.90x10 0 100 200 300 400 τ Burst (nS) | 8 Leti Devices Workshop | Silvano De Franceschi | December 4, 2016

TOWARDS A SCALABLE QUANTUM PROCESSOR First Target: Linear Qubit Array • Step-up: 2D Qubit Architectures • | 9 Leti Devices Workshop | Silvano De Franceschi | December 4, 2016

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