One of the keys of quantum computing is the:One of the keys of quantum computing is the: drop zone empty.RAM (random access memory)neutronmonitorqubit

To answer the question about one of the keys of quantum computing, let's analyze the options provided:

1. RAM (Random Access Memory): While RAM is crucial for classical computing as it allows for quick data retrieval, it does not play a significant role in the principles of quantum computing itself.

2. Neutron: Neutrons are subatomic particles that are not directly related to quantum computing. They are primarily relevant in nuclear physics.

3. Monitor: A monitor is a device used to display information from a computer, not a key component of quantum computing.

4. Qubit: The qubit, or quantum bit, is fundamental to quantum computing. Unlike a classical bit that can be either 0 or 1, a qubit can exist in multiple states simultaneously due to the principles of superposition and entanglement, which are core to quantum computing's power.

Final Answer

The key to quantum computing is the qubit.