Milos NesladekUniversity Hasselt

In collaboration with NanoSpin consortium

Jens Anders

Scalable Electrically Read Diamond Spin Qubit Technology for Single Molecule

Quantum Imagers

Q-MAGINE

Concept: Electrically read NV qubit chips for molecular imaging with chemical resolution

E. Bourgeois et al, Nature Communications 6 (2015)

NMR protocols are adapted to single NV qubit detection enabled by the electrical transfer between negatively charged and neutral NV centre employed for spin state detection protocol for detecting proximity nuclear spins

Mounted chip

Readout principle MW STIRAP addressing principle

NMR detection principle

Consortium partnersPartner PI Role

University Hasselt (Be) Milos Nesladek Diamond Engineering

Imec (Be) Emilie Bourgeois,Koen Martens

PhotophyiscsBiomolecular funtionalisation

University Ulm (De) Fedor Jelezko Q-NMR protocols

University Vienna (At) Michael Trupke Qubit addressing

Wigner Inst. Physics (Hu)

Adam Gali Theory

Project goals1.Electrically (PDMR) detected NMR quantum

sensor2.Single molecular quantum sequencer

• Rotem et al Limits on Spectral Resolution Measurements by Quantum Probes, Phys. Rev. Letters, 6, 060503, (2019)

• P. Siyushev et al. Photoelectrical imaging and coherent spin-state readout of single nitrogen-vacancy centers in diamond, Science 363 (2019)

• M. Bockstedte, Ab initio description of highly correlated states in defects for realizing quantum bits, npjQuantum Materials 3, 31 (2018)

Achieved: M2.1, M3.1In god progress: M2.2 ( theoretical protocol developed being tested, in preparation)M4.1: Demonstrated by ODMR, transfer to PDRM in progress

WP1 Management : following planWP2: Electrically-read diamond quantum chip

• Electrically detected single NV readout: Better spatial resolution as ODMR, limited only by the device size

• 1000 x enhanced signal detection sensitivity compared to ODMR

P. Siyushev, Science, 363 (2019) 2019

WP 3 Ab-initio modelling of materials

Precise protocols to address NV centre transition (a) (b) to enhance the readout rate (c )and to achieve single spin detection contrast > 50 %, theory design ready, in practical realization.• Ronald Ulbricht, Shuo Dong, Adam Gali, Sheng Meng, and Zhi-Heng Loh, Vibrational relaxation

dynamics of the nitrogen-vacancy center in diamond, Phys. Rev. B 97 220302(R) (2018), • G. Thiering and A. Gali, Theory of the optical spin-polarization loop of the nitrogen-vacancy center in

diamond, Phys. Rev. B 98 085207 (2018), • M. Bockstedte, F. Stütz, T. Garrat, V. Ivády, and A. Gali, Ab initio description of highly correlated states

in defects for realizing quantum bits, npj Quantum Materials 3, 31 (2018).

WP 4 Single molecular quantum NMR protocols

Randomization protocols for high S/N• Schmitt et al., Science 356 6340, 832-837 (2017)• Wang, Zhen-Yu et al., Randomization of Pulse Phases for Unambiguous and Robust

Quantum Sensing, Phys. Rev. Letters, 122 , 200403, (2019)• Rotem, A Gefen, T, Oviedo-Casado, Prior, J, Schmitt, S, Burak, Y, McGuiness, L,

Jelezko, F, Retzker, Limits on Spectral Resolution Measurements by Quantum Probes, Phys. Rev. Letters, 6, 060503, (2019)

Building upon Qdyne sub mHz lines(Schmitt, 2017), high S/N sensingprotocols are being developed andtransferred to photoelectric readout

WP5 Sensor Microarchitecture and Quantum Matrix Multiplexing

Matrix addressing by STIRAP protocols - Technology readyFabrication and assembly of the Matrix-Chips. A) Fabrication process. B) SEM micrograph of the chip mounted on a HF circuit board, with 10 leads enabling the addressing of 25 sites on the chip. C) (left to right) schematic representation .

In preparation 2020

STIRAP matrix addressing

WP 6 NMR proteomic chip for molecular tomography

a) quantum chip design b) integration with

microfluidics

a)- d) First tests on label-free DNA detection in microfluidic sensor

• Krecmarova et al, proc. word biomed. congress 2018

Planning 2nd term

Transfer developed ODMR - NMR quantum protocols to electrical readout

Enhance PDMR spin readout beyond ODMR

Progress theory protocols to resolve nuclear spin environment in molecules (decoupling from environment, isotropic and anisotropic broadening)

Test on single molecular system. Combined with addressing using 2 x 2 NV spin array.

Outreach https://www.nporadio1.nl/nieuws-en- co/onderwerpen/491086-kwantumbits-kunnen-nu-

ook-elektrisch-gelezen-worden https://www.ceskatelevize.cz/ivysilani/1010149176 7-studio-ct24/219411058060219 https://www.standaard.be/cnt/dmf20190214_041 76937

https://www.ulm-news.de/weblog/ulm-news/view/dt/3/article/68143/Erstmals_Quantenz ustand_in_Diamanten_gemessen.html

https://medienportal.univie.ac.at/presse/aktuelle-pressemeldungen/detailansicht/artikel/diamanten- die-besten-freunde-der-quantenwissenschaft/ https://datanews.knack.be/ict/nieuws/levert- hasseltse-diamant-de-essentiele-bouwsteen-voor- de-kwantumcomputer/article-normal-1429991.html?cookie_check=1570095769

https://www.tijd.be/tech- media/wetenschap/uhasselt-en-imec-stoppen-kwantuminformatie-in-diamant/10098368.html https://www.smartbiz.be/article/177921/uhasselt- kwantumcomputers/ https://www.hbvl.be/cnt/dmf20190215_04179342 /nieuwe-mogelijkheden-zijn-duizelingwekkend ttps://www.innovations-report.de/html/berichte/informationstechnologie/ diamanten-die-besten-freunde-der-quantenwissenschaft-quantenzustand-in- diamanten-gemessen.htmlhttps://www.czechtradeoffices.com/en/kr/news/n ext-step-in-affordable-quantum-computing