Nuclear magnetic resonance sensing device and nuclear magnetic resonance sensing method

A nuclear magnetic resonance sensing device comprising:

• a nuclear magnetic resonance sensing part that applies a high frequency magnetic field based on an RF signal to a target object and generates an observation signal with a frequency that is shifted from a frequency of the RF signal by a frequency of a nuclear magnetic resonance signal;
• a mixer part that performs intermediate frequency demodulation of the observation signal and generates an intermediate frequency demodulation signal including the nuclear magnetic resonance signal;
• a low-pass filter that attenuates a high frequency component higher than an intermediate frequency of the intermediate frequency demodulation of the intermediate frequency demodulation signal and passes a frequency component of the nuclear magnetic resonance signal;
• an analog quadrature phase detection circuit that performs quadrature phase detection with respect to the intermediate frequency demodulation signal that has passed through the low-pass filter and generates a demodulation signal and a demodulated signal of the nuclear magnetic resonance signal;
• and
• a digitizing device that digitizes the demodulation signal and the demodulated signal,
• wherein the digitizing device includes:
• a first physical field generator that generates a magnetic field or an electric field corresponding to the demodulation signal;
• a second physical field generator that generates a magnetic field or an electric field corresponding to the demodulated signal;
• a first optical quantum sensor part that generates light, by a first sensing member, corresponding to the magnetic field or the electric field generated by the first physical field generator and converts, by a first photoelectric element, the light generated by the first sensing member into an electrical signal as a first sensor signal;
• a second optical quantum sensor part that generates light, by a second sensing member, corresponding to the magnetic field or the electric field generated by the second physical field generator and converts, by a second photoelectric element, the light generated by the second sensing member into an electrical signal as a second sensor signal;
• a first analog/digital converter that digitizes the first sensor signal;
• and
• a second analog/digital converter that digitizes the second sensor signal, and
• the first and second optical quantum sensor parts respectively perform quantum operations with respect to the first and second sensing members and respectively cause the first and second sensing members to generate the lights corresponding to the magnetic fields or the electric fields.

A nuclear magnetic resonance sensing method comprising:

• a step of applying a high frequency magnetic field based on an RF signal to a target object and generating an observation signal with a frequency that is shifted from a frequency of the RF signal by a frequency of a nuclear magnetic resonance signal;
• a step of performing intermediate frequency demodulation of the observation signal and generating an intermediate frequency demodulation signal including the nuclear magnetic resonance signal;
• a step of attenuating, by a low-pass filter, a high frequency component higher than an intermediate frequency of the intermediate frequency demodulation of the intermediate frequency demodulation signal and passing a frequency component of the nuclear magnetic resonance signal;
• and
• a digitizing step of digitizing, by a digitizing device, the intermediate frequency demodulation signal that has passed through the low-pass filter,
• wherein the digitizing step includes:
• (a) generating a magnetic field or an electric field corresponding to the intermediate frequency demodulation signal that has passed through the low-pass filter;
• (b) generating light corresponding to the magnetic field or the electric field by a sensing member;
• (c) converting the light into an electrical signal as a sensor signal by a photoelectric element;
• and
• (d) digitizing the sensor signal by an analog/digital converter, and
• in the digitizing step, a quantum operation with respect to the sensing member is performed, and the sensing member is caused to generate the light corresponding to the magnetic field or the electric field.

A nuclear magnetic resonance sensing method comprising:

• a step of applying a high frequency magnetic field based on an RF signal to a target object and generating an observation signal with a frequency that is shifted from a frequency of the RF signal by a frequency of a nuclear magnetic resonance signal;
• a step of performing intermediate frequency demodulation of the observation signal and generating an intermediate frequency demodulation signal including the nuclear magnetic resonance signal;
• a step of attenuating, by a low-pass filter, a high frequency component higher than an intermediate frequency of the intermediate frequency demodulation of the intermediate frequency demodulation signal and passing a frequency component of the nuclear magnetic resonance signal;
• a step of performing, by an analog circuit, quadrature phase detection with respect to the intermediate frequency demodulation signal that has passed through the low-pass filter and generating a demodulation signal and a demodulated signal of the nuclear magnetic resonance signal;
• and
• a digitizing step of digitizing the demodulation signal and the demodulated signal,
• wherein the digitizing step includes:
• (a1) generating a magnetic field or an electric field corresponding to the demodulation signal;
• (a2) generating a magnetic field or an electric field corresponding to the demodulated signal;
• (b1) generating light, by a first sensing member, corresponding to the magnetic field or the electric field corresponding to the demodulation signal and converting, by a photoelectric element, the light generated by the first sensing member into an electrical signal as a first sensor signal;
• (b2) generating light, by a second sensing member, corresponding to the magnetic field or the electric field corresponding to the demodulated signal and converting, by a photoelectric element, the light generated by the second sensing member into an electrical signal as a second sensor signal;
• (c1) digitizing the first sensor signal;
• and
• (c2) digitizing the second sensor signal,
• in the digitizing step, quantum operations with respect to the first and second sensing members are respectively performed, and the first and second sensing members are respectively caused to generate the lights corresponding to the magnetic fields or the electric fields corresponding to the demodulation signal and the demodulated signal.