Dr Andre   Saraiva
Postdoctoral Fellow

Dr Andre Saraiva

Sch: Electrical Eng & Telecom

I am a Solid State Physicist, interested in the electronic structure theory of semiconductor devices used for quantum computing with spins, as well as general theoretical questions about quantum processor control, scalability and noise processes. I have been working in this field for over ten years as a professor in Brazil, and have moved to Australia in 2018 to work directly with experimentalists. My work at UNSW focuses on quantum dots built on industry-compatible SiMOS devices. I work in Prof. Andrew Dzurak's group. Our current endeavour is to scale up our qubits to deliver a small working quantum computer within the next five years. Many intriguing scientific questions are appearing along our journey. We are always welcoming bright young minds to join us in our quest.

Newton Building, 3rd Floor


  • Journal articles | 2021
    Yoneda J; Huang W; Feng M; Yang CH; Chan KW; Tanttu T; Gilbert W; Leon RCC; Hudson FE; Itoh KM; Morello A; Bartlett SD; Laucht A; Saraiva A; Dzurak AS, 2021, 'Coherent spin qubit transport in silicon', Nature Communications, vol. 12, pp. 4114, http://dx.doi.org/10.1038/s41467-021-24371-7
    Journal articles | 2021
    Huang JY; Lim WH; Leon RCC; Yang CH; Hudson FE; Escott CC; Saraiva A; Dzurak AS; Laucht A, 2021, 'A High-Sensitivity Charge Sensor for Silicon Qubits above 1 K', Nano Letters, http://dx.doi.org/10.1021/acs.nanolett.1c01003
    Journal articles | 2021
    Joecker B; Baczewski AD; Gamble JK; Pla JJ; Saraiva A; Morello A, 2021, 'Full configuration interaction simulations of exchange-coupled donors in silicon using multi-valley effective mass theory', New Journal of Physics, vol. 23, http://dx.doi.org/10.1088/1367-2630/ac0abf
    Journal articles | 2021
    Chan KW; Sahasrabudhe H; Huang W; Wang Y; Yang HC; Veldhorst M; Hwang JCC; Mohiyaddin FA; Hudson FE; Itoh KM; Saraiva A; Morello A; Laucht A; Rahman R; Dzurak AS, 2021, 'Exchange Coupling in a Linear Chain of Three Quantum-Dot Spin Qubits in Silicon', Nano Letters, vol. 21, pp. 1517 - 1522, http://dx.doi.org/10.1021/acs.nanolett.0c04771
    Journal articles | 2021
    Leon RCC; Yang CH; Hwang JCC; Camirand Lemyre J; Tanttu T; Huang W; Huang JY; Hudson FE; Itoh KM; Laucht A; Pioro-Ladrière M; Saraiva A; Dzurak AS, 2021, 'Bell-state tomography in a silicon many-electron artificial molecule', Nature Communications, vol. 12, pp. 3228, http://dx.doi.org/10.1038/s41467-021-23437-w
    Journal articles | 2021
    Terrazos LA; Marcellina E; Wang Z; Coppersmith SN; Friesen M; Hamilton AR; Hu X; Koiller B; Saraiva AL; Culcer D; Capaz RB, 2021, 'Theory of hole-spin qubits in strained germanium quantum dots', Physical Review B, vol. 103, http://dx.doi.org/10.1103/PhysRevB.103.125201
    Journal articles | 2021
    Seedhouse AE; Tanttu T; Leon RCC; Zhao R; Tan KY; Hensen B; Hudson FE; Itoh KM; Yoneda J; Yang CH; Morello A; Laucht A; Coppersmith SN; Saraiva A; Dzurak AS, 2021, 'Pauli Blockade in Silicon Quantum Dots with Spin-Orbit Control', PRX Quantum, vol. 2, http://dx.doi.org/10.1103/prxquantum.2.010303
    Journal articles | 2020
    Yang CH; Leon RCC; Hwang JCC; Saraiva A; Tanttu T; Huang W; Camirand Lemyre J; Chan KW; Tan KY; Hudson FE; Itoh KM; Morello A; Pioro-Ladrière M; Laucht A; Dzurak AS, 2020, 'Operation of a silicon quantum processor unit cell above one kelvin', Nature, vol. 580, pp. 350 - 354, http://dx.doi.org/10.1038/s41586-020-2171-6
    Journal articles | 2020
    Leon RCC; Yang CH; Hwang JCC; Lemyre JC; Tanttu T; Huang W; Chan KW; Tan KY; Hudson FE; Itoh KM; Morello A; Laucht A; Pioro-Ladrière M; Saraiva A; Dzurak AS, 2020, 'Coherent spin control of s-, p-, d- and f-electrons in a silicon quantum dot', Nature Communications, vol. 11, pp. 797, http://dx.doi.org/10.1038/s41467-019-14053-w
    Journal articles | 2020
    Gilbert W; Saraiva A; Lim WH; Yang CH; Laucht A; Bertrand B; Rambal N; Hutin L; Escott CC; Vinet M; Dzurak AS, 2020, 'Single-Electron Operation of a Silicon-CMOS 2 × 2 Quantum Dot Array with Integrated Charge Sensing', Nano Letters, http://dx.doi.org/10.1021/acs.nanolett.0c02397
    Journal articles | 2020
    King C; Schoenfield JS; Calderón MJ; Koiller B; Saraiva A; Hu X; Jiang H; Friesen M; Coppersmith SN, 2020, 'Lifting of spin blockade by charged impurities in Si-MOS double quantum dot devices', Physical Review B, vol. 101, http://dx.doi.org/10.1103/PhysRevB.101.155411
    Journal articles | 2019
    de Aguiar Júnior FS; Monken CH; Santos MF; de Melo e Souza R; Saraiva A; Koiller B; Jorio A, 2019, 'Physical Properties of Photonic Cooper Pairs Generated via Correlated Stokes–anti-Stokes Raman Scattering', Physica Status Solidi (B) Basic Research, vol. 256, http://dx.doi.org/10.1002/pssb.201900218
    Journal articles | 2019
    Júnior FSDA; Saraiva A; Santos MF; Koiller B; Souza RDME; Pena AP; Silva RA; Monken CH; Jorio A, 2019, 'Stokes-anti-Stokes correlated photon properties akin to photonic Cooper pairs', Physical Review B, vol. 99, http://dx.doi.org/10.1103/PhysRevB.99.100503
    Journal articles | 2018
    Dusko A; Delgado A; Saraiva A; Koiller B, 2018, 'Adequacy of Si:P chains as Fermi-Hubbard simulators', npj Quantum Information, vol. 4, http://dx.doi.org/10.1038/s41534-017-0051-1
    Journal articles | 2017
    Saraiva A; Júnior FSDA; De Melo E Souza R; Pena AP; Monken CH; Santos MF; Koiller B; Jorio A, 2017, 'Photonic Counterparts of Cooper Pairs', Physical Review Letters, vol. 119, http://dx.doi.org/10.1103/PhysRevLett.119.193603
    Journal articles | 2016
    Saraiva AL; Salfi J; Bocquel J; Voisin B; Rogge S; Capaz RB; Calderón MJ; Koiller B, 2016, 'Donor wave functions in Si gauged by STM images', Physical Review B, vol. 93, http://dx.doi.org/10.1103/PhysRevB.93.045303
    Journal articles | 2016
    Kasperczyk M; De Aguiar Júnior FS; Rabelo C; Saraiva A; Santos MF; Novotny L; Jorio A, 2016, 'Temporal Quantum Correlations in Inelastic Light Scattering from Water', Physical Review Letters, vol. 117, http://dx.doi.org/10.1103/PhysRevLett.117.243603
    Journal articles | 2016
    Baena A; Saraiva AL; Menezes MG; Koiller B, 2016, 'Donors in Ge as qubits-Establishing physical attributes', EPL, vol. 116, http://dx.doi.org/10.1209/0295-5075/116/20002
    Journal articles | 2016
    Dusko A; Saraiva AL; Koiller B, 2016, 'Mitigating valley-driven localization in atomically thin dopant chains in Si', Physical Review B, vol. 94, http://dx.doi.org/10.1103/PhysRevB.94.115425
    Journal articles | 2015
    Foote RH; Ward DR; Prance JR; Gamble JK; Nielsen E; Thorgrimsson B; Savage DE; Saraiva AL; Friesen M; Coppersmith SN; Eriksson MA, 2015, 'Transport through an impurity tunnel coupled to a Si/SiGe quantum dot', Applied Physics Letters, vol. 107, http://dx.doi.org/10.1063/1.4930909
    Journal articles | 2015
    Betz AC; Wacquez R; Vinet M; Jehl X; Saraiva AL; Sanquer M; Ferguson AJ; Gonzalez-Zalba MF, 2015, 'Dispersively Detected Pauli Spin-Blockade in a Silicon Nanowire Field-Effect Transistor', Nano Letters, vol. 15, pp. 4622 - 4627, http://dx.doi.org/10.1021/acs.nanolett.5b01306
    Journal articles | 2015
    Saraiva AL; Baena A; CalderÓn MJ; Koiller B, 2015, 'Theory of one and two donors in silicon', Journal of Physics Condensed Matter, vol. 27, http://dx.doi.org/10.1088/0953-8984/27/15/154208
    Journal articles | 2014
    Dehollain JP; Muhonen JT; Tan KY; Saraiva A; Jamieson DN; Dzurak AS; Morello A, 2014, 'Single-shot readout and relaxation of singlet and triplet states in exchange-coupled P 31 electron spins in silicon', Physical Review Letters, vol. 112, http://dx.doi.org/10.1103/PhysRevLett.112.236801
    Journal articles | 2014
    Dusko A; Saraiva AL; Koiller B, 2014, 'Splitting valleys in Si/ SiO2: Identification and control of interface states', Physical Review B - Condensed Matter and Materials Physics, vol. 89, http://dx.doi.org/10.1103/PhysRevB.89.205307
    Journal articles | 2014
    Gonzalez-Zalba MF; Saraiva A; Calderón MJ; Heiss D; Koiller B; Ferguson AJ, 2014, 'An exchange-coupled donor molecule in silicon', Nano Letters, vol. 14, pp. 5672 - 5676, http://dx.doi.org/10.1021/nl5023942
    Journal articles | 2013
    Zhang L; Luo JW; Saraiva A; Koiller B; Zunger A, 2013, 'Genetic design of enhanced valley splitting towards a spin qubit in silicon', Nature Communications, vol. 4, http://dx.doi.org/10.1038/ncomms3396
    Journal articles | 2012
    Culcer D; Saraiva AL; Koiller B; Hu X; Das Sarma S, 2012, 'Valley-based noise-resistant quantum computation using Si quantum dots', Physical Review Letters, vol. 108, http://dx.doi.org/10.1103/PhysRevLett.108.126804
    Journal articles | 2012
    Baena A; Saraiva AL; Koiller B; Calderón MJ, 2012, 'Impact of the valley degree of freedom on the control of donor electrons near a Si/SiO 2 interface', Physical Review B - Condensed Matter and Materials Physics, vol. 86, http://dx.doi.org/10.1103/PhysRevB.86.035317
    Journal articles | 2011
    Saraiva AL; Calderón MJ; Capaz RB; Hu X; Das Sarma S; Koiller B, 2011, 'Intervalley coupling for interface-bound electrons in silicon: An effective mass study', Physical Review B - Condensed Matter and Materials Physics, vol. 84, http://dx.doi.org/10.1103/PhysRevB.84.155320
    Journal articles | 2010
    Saraiva AL; Koiller B; Friesen M, 2010, 'Extended interface states enhance valley splitting in Si/ SiO2', Physical Review B - Condensed Matter and Materials Physics, vol. 82, http://dx.doi.org/10.1103/PhysRevB.82.245314
    Journal articles | 2009
    Saraiva AL; Calderón MJ; Hu X; Das Sarma S; Koiller B, 2009, 'Physical mechanisms of interface-mediated intervalley coupling in Si', Physical Review B - Condensed Matter and Materials Physics, vol. 80, http://dx.doi.org/10.1103/PhysRevB.80.081305
    Journal articles | 2007
    Saraiva AL; Calderón MJ; Koiller B, 2007, 'Reliability of the Heitler-London approach for the exchange coupling between electrons in semiconductor nanostructures', Physical Review B - Condensed Matter and Materials Physics, vol. 76, http://dx.doi.org/10.1103/PhysRevB.76.233302
  • Conference Papers | 2019
    de Aguiar FS; Jorio A; Monken CH; Santos MF; Koller B; Saraiva A; de Melo e Souza R, 2019, 'Quantum Correlations in the Stokes-anti-Stokes Raman Scattering: Photonic Cooper pairs', in Optics InfoBase Conference Papers, Rochester, New York United States, presented at CQO-11, Rochester, New York United States, 04 August 2019 - 08 August 2019
    Conference Papers | 2019
    De Aguiar FS; Jorio A; Monken CH; Santos MF; Koller B; Saraiva A; De Melo E Souza R, 2019, 'Quantum correlations in the stokes-anti-stokes raman scattering: Photonic cooper pairs', in Proceedings Rochester Conference on Coherence and Quantum Optics, CQO 2019
    Conference Papers | 2019
    2019, 'Quantum correlations in the stokes-anti-stokes raman scattering: Photonic cooper pairs', in Proceedings Rochester Conference on Coherence and Quantum Optics, CQO 2019
    Conference Papers | 2015
    Gonzalez-Zalba MF; Saraiva A; Calderon MJ; Heiss D; Koiller B; Ferguson AJ, 2015, 'A single-molecule transistor in silicon', in 2014 Silicon Nanoelectronics Workshop, SNW 2014, http://dx.doi.org/10.1109/SNW.2014.7348581
    Conference Papers | 2009
    Calderón MJ; Saraiva A; Koiller B; Sarma SD, 2009, 'Quantum control and manipulation of donor electrons in Si-based quantum computing', in Journal of Applied Physics, http://dx.doi.org/10.1063/1.3124084