3D Integration Technology for Quantum Computer based on Diamond Spin Qubits
R. Ishihara (TU Delft - QID/Ishihara Lab, TU Delft - Quantum Circuit Architectures and Technology, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)
Jeffrel Hermias (TU Delft - QuTech Advanced Research Centre, TU Delft - Information and Communication Technology, Kavli institute of nanoscience Delft, TU Delft - Safety and Security Science)
S. Yu (TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, TU Delft - QID/Ishihara Lab)
K.Y. Yu (Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre, TU Delft - Quantum Circuit Architectures and Technology)
S. Nur (Kavli institute of nanoscience Delft, TU Delft - Quantum Circuit Architectures and Technology)
T. Iwai (TU Delft - Quantum Integration Technology)
Tetsuya Miyatake (Fujitsu Laboratories)
K. Kawaguchi (Fujitsu Laboratories)
Yasuaki Doi (Fujitsu Laboratories)
S. Sato (Fujitsu Laboratories)
Y. LI (Student TU Delft)
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Abstract
Quantum computer chip based on spin qubits in diamond uses modules that are entangled with on-chip optical links. This enables an increased connectivity and a negligible crosstalk and error-rate when the number of qubits increases on-chip. Here, 3D integration is the key enabling technology for a large-scale integration of the diamond spin qubits with photonic circuits and CMOS electronics for routing, control and readout of qubits. Several engineering challenges exist in order to integrate the large number of spins in diamond with the on-chip circuits operating at a cryogenic temperature. We will review trends, address challenges and discuss future outlook of the integration technology for realization of a scalable quantum computer based on diamond spin qubits.
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