A heterometallic [LnLn′Ln] lanthanide complex as a qubit with embedded quantum error correction

Abstract

We show that [Er-Ce-Er] molecular trinuclear coordination compound is a promising platform to implement the three-qubit quantum error correction code protecting against pure dephasing, the most important error in magnetic...

Chemical tuning of spin clock transitions in molecular monomers based on nuclear spin-free Ni(ii)

“…by introducing several spin sites each acting as a qubit. This strategy has given rise to model systems, able to implement basic quantum gates 7,[11][12][13] or even quantum error correction algorithms 15 at the molecular scale. Decoupling the qubits from each other contributes to enhance the spin coherence.…”

“…In the former case, the most widely used EPR spectrometers operate at 9-10 GHz (X-band) or 35 GHz (Q band). [8][9][10][11][12][13][14][15][16][18][19][20][21][22][23][24][25] In the case of superconducting circuits, the frequencies range mainly from 1 to 10 GHz. [34][35][36] We have shown above that 1 possesses a quantum tunnelling gap D/h z 83 GHz.…”

“…The interaction of these ions with their local coordination sphere determines the magnetic energy levels and states of the molecule. Tuning the molecular structure and the local coordination of the magnetic ions introduces the possibility of designing systems adapted to specic applications, [7][8][9][10][11][12][13][14][15] and constitutes one of the most appealing characteristic traits of a chemically driven approach.…”

Targeting molecular quantum memory with embedded error correction

“…A further challenge in producing any scalable quantum computing platform is quantum error correction (QEC), [25][26][27] which is needed to perform complex algorithms with high fidelity. 28 Again molecules could offer a significant advantage.…”

Design of pure heterodinuclear lanthanoid cryptate complexes

“…Lanthanide (Ln) molecular materials have attracted strong interest and have been intensively studied in a wide range of areas such as catalysis, [1][2][3][4][5] bioinorganic chemistry, 6,7 Magnetic Resonance Imaging, [8][9][10] luminescent materials, [11][12][13][14] multimodal imaging probes, [15][16][17] Single-Molecule Magnets (SMMs) [18][19][20][21] and Quantum Information Processing (QIP). [22][23][24][25][26][27][28][29][30][31][32][33][34] Many of the interesting properties of Ln complexes originate from their special electronic structure, where the 4f subshell is shielded from the environment by the 5s and 5p orbitals. 35 For example, this results in a large unquenched orbital-angular momentum which has been essential to build SMMs [36][37][38] with record blocking temperatures, [39][40][41] and leads to sharp absorption and emission bands, due to the lower inuence of vibrations on the f-f transitions.…”